Don't have time to read thru thread right now so forgive me if I am repeating anything here:
Rather than having the line-up coach built into MFL, I'd like to see the ability to import the rosters into FS, and then be able to add other players. I will often go in and add FA players and then use the line-up coach to see who is predicted to have the best week, to help me make decisions on which FA to grab to cover a bye week or injury or something.
Also if there's any way to be able to import leagues from other sites like Flea, Yahoo, ESPN, etc. that would be totally awesome. Manually entering the rosters is extremely cumbersome.
And of course, the more IDP analysis, the better!
I do love the fact I can store 10 leagues on here, this is the only site I frequent that allows that many league profiles.