Hey I'm a big fan of this game from korea!
I suggest 'responding to crowds' / 'popularity' in rtts mode.
I think that it would be awesome, if i can show thanks to my fans (friendly salute etc...) when i hit a home run or made QS and all the crowds give big hands for me.
Or provoke away fans after a great play.
those points could affect player's personality factor.
Popularity Level (level of fan's support) influences my ability(pitcher's confidence...), salary, HOF possibility and so on. 'Relationship' is already exist in rtts. It's like relationship with team supporters. HOF level career players deserve applause from all baseball fans.
These points could be found in other sports games like Pawapuro of Konami or FIFA (like goal celebration).
Thank you for reading my opinion. Bye!