So our league has voted to incorporate IDPs this year. No one in our league has really played in one with IDPs before so we are pretty clueless on what's a good scoring system, how many to use, what positions, etc.  I was thinking about starting small, like maybe just 1 DL, 1 LB and 1 DB.  What is the most common/best scoring system for these positions? Ideally we'd have a system that makes the IDPs just as relevant as the offensive skill players.  Our offensive scoring system has a nice balance that gets a pretty even amount of QBs/RBs/WRs in the top 20. We go 4 pts pass TD, 1 pt every 25 pass, 6 for all other TDs, 1 pt per 10 yards, .5 for rec for WR/TE, .25 for RBs, start 1 QB 2 RB 3 WR 1 TE.  Any insight to getting IDPs incorporated in a league like this would be appreciated!
		
		
	 
I'm in the same boat and this thread has helped greatly. This is what I'm looking to do.Step 1: Decide how much you want IDPs (in general) to be worth. Do you want them equal to offensive players in value? 60-40 off/def split? 55-45? Do you want a top LB to equal a mid RB1/WR1 or a RB2?
I like to try and keep the positions pretty close to each other scoring wise.
Step 2: Decide what type of IDP you want valued. Do you want a big play league where sacks, fumble plays, and coverage stats are rewarded highly? Do you want a league where steady tacklers are favored? Would you prefer a balanced approach?
Like above, I'm going for move of a balanced approach
Step 3: Decide how deep an IDP league you want. Do you want to start just a couple players at a couple positions or a full 11 man defense? Do you want a more advanced system with DT and CB broken into separate positions?
I'm thinking of the keeping to positions together DE, LB, DB. I was orignally thinking of 1 of each with a flex but now I'm leaning more towards 2 of each with 2 flex.
Step 4: Decide if you want the DL/LB/DB positions roughly equal in value or staggered a bit like the QB/RB/WR/TE position and what the relative values should be.
Like above, I'm going to try and keep them closer to equal value.
Step 5: Make a sham MFL league and play with the scoring system until you get a system where the players are ranked in relative value within and across positions where you want them. You could play with Excel spreadsheets after downloading stats, but MFL may be easier.
Have been playing with a few excel sheets to try and balance everything out. Here's what I've come up with, let me know what you think.
First of the bascis for my offense is 1 for 20 passing, 4 per TD -2 per Int. 1 for 10 rushing, 1 for 7 receiving, 6 per TD. It's pretty basic with a tweak to bring WR up a little, not a fan pf PPR. So for the IDP's I'm thinking 1 per Assist, 2 per tackle, 6 per TD, 3 per FF and FR, 2 per sack and Int, and 1 per Pass defended. Again I think this is pretty basic but he's the tweaks to level out the scoring. I bumped DE sacks to 4(+2) and tackles to 3(+1) and DB get 5(+3) per Int and 4(+3) per Pass defended.
With this scoring the numbers shake out like this for the top 24 for each position. Please let me know what you think.
QB	RB	WR	TE	LB	DB	DL
350.95	299.99	262.54	174.46	280	238	237
341.7	275.66	240.26	167.74	266	236	238
307.5	260.94	242.08	161.88	257	233	213
297	242.76	248.38	163.66	254	233	213
269.85	215.84	236.78	156.34	251	228	200
275.4	209.02	235.48	133.02	239	233	187
253.8	202.22	228.7	135.28	236	226	187
260.1	198.58	218.62	134.62	231	223	188
254.15	188.76	220.54	133.56	227	218	185
242.85	206.72	226.76	122.52	224	217	187
234.3	200.56	211.86	109.16	224	214	186
249.75	187.44	206.54	102.68	222	206	183
231.9	179.04	206.08	108.94	215	198	180
227.15	188.46	192.96	97.34	223	201	178
236.15	182.7	189.22	87.98	222	198	176
226.35	175.24	184.68	88.64	224	203	177
225.2	164.74	169.54	97.04	226	198	171
213.7	158.88	168.92	84.96	223	197	175
231.5	164.82	170.76	89.86	215	196	169
221.45	157.2	161.12	88.06	211	196	177
222.4	159.82	158.28	88.06	214	193	171
203.55	153.04	170.74	71.56	209	194	161
204.1	156.32	156.84	69.94	196	196	160
194.9	157.2	161.74	72.74	196	194	157
173.3	157.52	157.9	74.28	198	195	160
I can't figure out how to paste the table so it's readable, but you get the idea.