[Rawlsian]

I'd like to see the following features, in no certain order:

(1) Realistic Luxury Tax situations and penalties;
(2) Trading International Free Agent money;
(3) Storylines on international free agents and draft prospects;
(4) A way to set coaches / veteran players to mentor younger prospects for a chance at improving their ratings; and
(5) Ability to negotiate the season budget and/or goals with ownership, to avoid outrageous directives like "sign star player to an extension" while simultaneously being mandated to cut payroll.
(6) Going with (5), I'd like to see more consequences for not hitting ownership goals-- it's really hard to get fired in this game.

One other thing that's on my wishlist, and it would be really cool to see it made into OOTP 21 -- would be battled ball information (like exit velocity, launch angle). I think this is already in the game to an extent, but I don't think we can overlay our own park over a hitter's batted ball information from a season ago. This way, I can get a better sense of how well the hitter will do if he moves to Fenway (as an example). Will those line drive home runs he is known for translate into singles and doubles? Does his weak flyballs become Fenway specials? It would help a lot when evaluating guys and all other things are equal.