Hey, hey !
What changes/evolutions in THS do you hope to reflect more the universe of the Batman ?
My point of view: it sould definitely include a stealth system, with one-versus-all scenarios (meaning: one heroes against many bad guys ).
For instance, the player could have between three and five tokens to show the possible places where Batman/Nightwing/etc. is but in fact, all but one are mere lures. Think it could be a good way to reproduce theses moments where shadows are your best ally/ennemy, depending on which side your on.
Moreover, not to forget that Bruce is not only a man of action but a great detective also, we could imagine a system where at the beginning of the game, the player can loose time (tours) to get advantages (bonuses, possibility on the map, etc.) ; is the introduction of Hush not the best examples for that ?
Regards,
Emmanuel