Well, I don't really like the way they are treating Superman in comics nowadays, he's a character that doesn't need to be re-invented, and shouldn't be. Honestly he's one of the few real "goody goody" characters left who acts as a paragon and wins in the end, and without characters like this there really isn't a counterpoint to a lot of the darker, more "extreme" characters to cause them to retain meaning. If everyone is a shadowy vigilante, and no other approach is viable, then it ceases to be original and is just par for the course.
Right now I don't want to see a game "getting into what makes him tick" any more than I care for the current "re-launches" and bringing back Superman with a new "darker, more extreme, left wing attitude!"... which I hope like every other event leads to the status quo being restored.
Simply put it's the wrong studio to do it, and the wrong time to do it.
Truthfully, if they are going to do other super-hero video games I'd much rather see them play around with some of the less iconic properties, or maybe create a single player game where you can create your own hero within an established universe, I actually thought the whole "DC Universe Online" game would have worked *better* storywise if it wasn't an MMO and hadn't been designed that way from the beginning, if they had made that as a sandbox, and focused on adding more content to the game rather than the multi-player content that made it an MMO it would have been fairly awesome.
It also occurs to me that DC has the whole "Wildstorm" universe which is still kicking to play around with.
Also I'll admit that the whole "Justice League Heroes" game was a decent idea, but poorly implemented due to not really letting you use what characters you wanted for specific missions and so on. People are getting all excited about who might be alternate player characters in super hero titles, building a game enviroment where you can play through the missions as a diverse range of characters is not a bad idea either.
The basic point is that making a "Superman" game doesn't really appeal to me at the moment given everything that is going on.