I have Laurenitis kept from last season, which is very unusual for me. Experience has taught me that a stud one year can vanish the next - Mario Williams and Justin Tuck were sure things last year that didn't help their owners. MLBs can be more reliable, but there's 32 (more really, with all the 3-4s) MLBs who have broadly similar value. I usually end up taking guys off waivers throughout the year to start at IDP and don't feel it harms me much. To me, the most valuable players (assuming you must start DL, LB and DBs) are #1 - good MLBs on bad defenses, especially if the team also has a bad offense; #2 - good strong safeties on the same sorts of teams and #3 - DEs who get tackles as well as sacks.
Glad you enjoyed your IDP season Tex, and I'm glad you found my advice helpful. Now you'll just need to try a 2QB league
The ESPN fantasy draft podcasts have been pretty good, but they had one last night that covered - just a little bit - non-standard league formats. I thought Christopher Harris did a good job of understanding the peculiarities of the different formats and offering advice on how to structure the rules in those leagues and how to approach your draft.