I actually think due to the FFPC off-season rosters it's gives extra value for D's and K's since you have to keep one of each and relative to your roster size they make up a larger chunk of your team than in most leagues.
So I can see some reasoning behind it but I'd still probably not do that trade this year mainly because at this point I have 31 incoming rookies I'd grade out as fantsy second round draft picks and we'll see some veterans picked inside those 31. So while on paper those are third round picks to me they carry the same value as what I'd put a middle second and late second rounder in most years. That being said middle and late second rounders most years have low percentages of sticking on the roster so again I can see reasons for making this trade.
Seattle D scored a decent amount more points than all the other non top 3-4 defenses. I dont have the exact numbers but it was probably like 30-40 points more than what we would have had, if not 50 points.
That is a VERY large discrepency. Thats like having Julius Thomas scoring 240 instead of having Delanie walker who scores like 190.
Of course, they could easily regress and score like 140 this year instead of the 200 they scored last year..........but you can just as easily draft a dud at pick 25.
I like the move for us given our roster is definitely set up to win now and for the next few years.
Also, in a startup I am pretty confident Seattle D goes a few rounds or more ahead of wherever that 25th pick in this draft will go.
I agree with you that the top D and K are underrated a bit. I can understand taking the picks side also this year, but when you are set up to make a run at a BYE for a couple years, and you have a weakness at D, getting the best D for a couple 3rds (while getting a few later picks back which have provided value for us several times in the past) was an easy decision for me.