Off the top of my head.... in no specific order...not specifically for 15, but something that the team should strive for in future iterations. There's definitely more, but these are the things that immediately come to mind.
Specifically for 15:
Outfielder and Infielder reactions, need more urgency reactions, situational awareness*
*People are going to say you have to prefill your throws (I do this, able to turn double plays more frequently), etc. but lack of urgency from fielder also happens with the CPU. Lack of situation awareness by fielders is problematic (both Player and CPU). Close plays at first, close plays at different bases because the fielder lacks awareness for the situation (i.e. taking his sweet time to throw to a bag, both Player and CPU). Sometimes lack of urgency reaction also happens when you prefill your throws.
Practice mode for running bases (not RTTS because I don't play RTTS, but regular exhibition, franchise mode base running)
Practice mode for stealing bases (not RTTS because I don't play RTTS, but regular exhibition, franchise mode base running)
Practice mode for situational stealing (not RTTS because I don't play RTTS, but regular exhibition, franchise mode base running)
MLB the Showfuture iterations
Real time presentation no more cut scenes
Variable animations (i.e. players sliding into second loses his helmet, everyone does the same animation. Would like to see at least 15-20 or so situational animation (for different situations), would like to see players call time and go pick up his helmet or call time and remove his arm pad/shin guard and hand it to either the ball boy or first base coach (10-15 different animation for these type of situation so it doesn't look like it's the same animation each and every single time). There should be a first base coach talking to the runner at first all in real time, etc.)
Awareness (i.e. Foul ball pop up, rather than looking at whether the catcher/1st/3rd baseman catches the ball in foul territory, the batter looks towards the outfield. Ball in the dirt, catcher grabs the ball and repeatedly look towards 1st and 3rd even if there is no one on 3rd.
Better Player Models
Facial Scans
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