I don't see why they'd go Sins style? They already have Sins for that.
I have to disagree with you on the multiplayer, though. I actually bought GC2 and it's first expansion to support Stardock, but I can't say I've played more than 20 minutes of it. It's not that I don't think it's a great game, it probably is, but gaming is a social thing for me. If I can't play with my friends, it doesn't hold much appeal to me. But that's alright, not every game can be targetted at my demographic

Sadly I'm one of the people who plays almost exclusively multiplayer, but I play on a LAN with friends, not matching with people online. I'm sadly the forever hidden demographic