By the way, I mentioned earlier in the thread that I really transformed my primary dynasty league over the past 2 years, going from one of the worst teams in the league to one of the best.
I thought it might be a worthwhile exercise to walk through these moves and how they ultimately led to that transformation. One key that really helped me in some of these moves is moving players that I considered overvalued and targeting guys who, at the time, were grossly undervalued. In retrospect, many of these deals look somewhat lopsided, but at the time it was a situation where the player's perceived value was, for me, a lot higher than I thought it should have been.
Also, on the trading front, I have a pretty good reptuation for making fair offers. I found it particularly important to really learn what each owner values, and negotiate accordingly. (E.g., some of the guys were willing to part with vets on the cheap, others didn't put too much stock in draft picks since they haven't drafted well in the past, etc).
League Overview
This is a 16 team, non-PPR league with full contract/salary cap. All players except those on rookie contracts get a 5% increase each year, and there are also performance increases of up to 15% depending on position and how they finished. You can extend contracts, but raises their base salary by 25%. Rookie salaries are tied to draft position, with 1.01 being 3m, 2.01 being just under 2m, etc. UFA is done with full auction bidding, and tied to the total value of the contract (so you can raise a $3m/1yr bid with a $1.1m/3yr bid).
My team, circa Jan 2007
QB: Croyle (1.15m/3), Trent Green (3.7m/1), Damon Huard (2.64m/5), Chad Pennington (1.59/2), Jake Plummer (3.7m/2), Bledsoe as RFA (4m)
RB: Portis (4m/4), Dunn (3.7m/2), Betts (950k/1)
WR/TE: Marty Booker (540k/2), Malcom FLoyd (445k/2), Santonio (2.2m/2), TJ Housh (2.2m/2, Travis Taylor (400k/1), Desmond Clark (750k/2), Rd Smith RFA at 2m
PK: Longwell (850k/3), Morten Andersen (500k/1)
DL: KGB (1.7m/2), James Hall (2m/4), Kerney (1.9m/2)
LB: Shaun Phillips (3m/4), Bruschi (1.8m/1), David Pollack (1.3m/2), Adalius Thomas (3.2m/2), Odell Thurman (3m/3), Al Wilson (500k/2)
DB: Dunta Robinson (2.1m/1), Charles Woodson (350k/2), Dexter Jackson (364k/1), Donovin Darius (364k/1) Deltha Oneal 2.1m/1
My team today
QB: Ryan (2.5m/4), Jamarcus (2.7m/3)
RB: Chris Johnson (2.5m/3), Thomas Jones (5.7m/1), Beanie Wells (2.92/5), Donald Brown 2.76m/5, Bernard Scott (1.2m/4)
WR:
Holmes (2.9m/2), Avery (1.5m/4), Driver (2.1m/2), Sidney Rice (2.2m/3),
Floyd (550k/2), Maclin (2.2m/5), COok (350k/2), Keller (455k/2)
PK:
Longwell (940k/1)
DL: Allen (350k/3), Tuck (500k/3), Avril (350k/3)
LB: Harrison (1.1m/4), Lofton (1.9m/3), TImmons (1.8m/5), Crowder (1.3/5), Barton (390k/1), Dobbins (350k/2), Levy (725k/3)
DB: Troy (2.8m/1), Hope (364k/1), Yeremiah Bell (490k/2), Finnegan (350k/2)
I did have two 1sts to play with in 2007 (1.04 and 1.12), but otherwise didn't have too much in the way of picks (e.g., no mid round picks, no 1st in 2009).
How did I get there?
In 2007, notable moves:
I drafted Jamarcus at 1.04 and Sidney Rice at 1.12. Obviously Jamarcus hasn't panned out, but in a 16 team league with 6pts per pass TD, and my other QB situation, I needed a QB badly.... and more importantly I wasn't sold on Chris Henry or Brandon Jackson who were otherwise going at 1.04.
I traded Adalius THomas (this is the year he left Baltimore) and Chad Pennington for Eric Barton, Elvis Dumervil, a 2009 1st, two 2008 2nds, a 2009 3rd, and two 5ths
I traded Warrick Dunn and 3rd rounder for what should have been late 2008 1st but ended up being 1.07
I traded Trent Green and Sabby PIscatelli (who I drafted in the 5th) for Channing Crowder, Josh Bullocks , an early 2008 2nd, an early 2009 3rd, and a 2010 5th
I traded one of those 2008 2nds and a 2008 5th rounder for Timmons.
Notably, dropped most of the dead weight on the team and acquired James Harrison for $1.1m (low for a LB) and Justin Tuck for 350k (league min)2008:
I had a pretty solid draft in 2008: Kevin Smith (1.04), Chris Johnson (1.07), Curtis Lofton (2.01), Donnie Avery (2.10), Adibi (4.04)
Desperate for a QB, I traded that 1st rounder I got from the previous year's trade, my 2011 1st, a 2010 3rd and Curtis Lofton for Matt Ryan
I traded TJ Housh for a 1st rounder which ended up being 1.04 (his team was better than that originally)
When Portis was rolling, with Kevin Smith and Chris Johnson playing well, I traded him for what ended up being 1.02
I traded Shaun Phillips to someone for a mid-second
Throughout the year, picked up Keller and Avril for league min and Malcolm Kelly for 1.1m/5yrs when he wasn't signed because of cap space / injury concerns2009 is where i got really active
I REALLy wanted to get Lofton back, and managed to pry him away with Adibi (who was much cheaper) plus 2.04 for Lofton and a 3rd.
Picked up Jared Allen in RFA - got him for league min (

) by giving up my 1.13 pick, who would have otherwise cost me 2.2m anyway
Picked up Donald Driver in RFA, getting him for 2.1m/2yrs and giving up 3.13 in the process
Traded Malcolm Kelly and Cromartie (who I picked up in 2007 for league min) for 2.02
Traded Dumervil (who was a big ? then... argh!) and 3.05 for Troy and two future 3rds (in part because I didn't have the roster space to sign 3.05, and those others should both be early)
Traded 2.01, 2.11, and my 2010 2nd rounder for 1.11
Traded Kevin Smith to a bad team who was desperate at RB for - get this - their 2010 1st, 2010 2nd, 2011 1st, 2011 2nd, and 2011 3rd. This team had no 2009 picks and really wanted a RB, and no one else was willing/had the depth to part with a young guy. He offered similar deals for Smith or CJ3 - just wanted a good young RB - but I refused to give up CJ3 (who I have in about every league I could get near him in)
Thomas Jones had a very high price tag and owner had some major cap issues... plus this was right after the NFL draft when they grabbed Shonne Green, so some had soured on him. I managed to grab him for only a couple of 2011 3rd rounders, in part because I was the only person with the cap space to do so.
Drafted Beanie Wells (1.02), Donald Brown (1.04), Maclin (1.11), Bernard Scott (3.03)I think my main lessons for rebuilding a dynasty roster are as follows:
Know the owners in your league and what they value. First, you can pull of great trades if you know this. Second, you can find serious value in both the draft and UFA/RFA. E.g., most people thought I was crazy at the time to give up a 1st for a DL - even the best DL. The thing is, it wasn't just trading 1.13 for Allen straight up - it was getting him at 350k instead of $3m. But I knew the league overlooked that position compared to others.
If you use salary/contract yr cap, a well-managed team with a lot of room is a big advantage... and can create value in and of itself (e.g., worth a pick, taking the penalty, etc).
If you draft well, you can always have a backlog of players who can grow into a starter's role.
Cash in on players when their value is high and you have that depth
Don't be afraid to blow up a bad team. Sometimes cutting everyone, selling anything of value, is better than being middling forever. I sold guys who would have made me more competitive, but I was better off in the long run for selling those guys to competitive teams that paid somewhat of a premium to fill holes on a playoff-caliber team.