IMO...
1. MORE statistics. For a baseball sim, IMO the weakness of OOTP has always been that there aren't enough statistics.
2. Still more AI improvements. It gets better but IMO is still not logical in many aspects.
3. Complete overhaul of financials. The game just does not really understand contracts/finances/ etc.
4. PLEASE improve coaches universally or just get rid of it. IRL, an A ball manager would not be POOR. This is just completely broken and has been forever.
5. Tighten things up. Its still sloppy. Screens display words over other words, until this year the ability to toggle in menus would popup over other menus etc.
6. Ability to sort/search by ANY of the statistics. I should be able to sort/search for anything I want. IT'S A SPREADSHEET.
7. More customization in screens and player screens.
8. Ability to see the entire league's standings from the home screen without toggling League/Standings
9. EASIER mod integration for us non computer savvy folks.
10. Better documentation for things. Better manual and updated etc.
11. Perfect Team being a completely separate game.