A few things:
- De-emphasize motion controls. I don't mind it as an option, but not as the only option.
- Games. Lots of awesome first party titles. This is probably the biggest one, though. My main motivation to buy a console is exclusive titles. If a console has a lot of games I'm interested in, I'll buy that console. That's why I own a PS3, and it's why I don't own a 360. I'd consider a Wii, but the previous point certainly bothered me, and the amount of games I was interested in didn't justify the price. Oh yeah:
- Price it reasonably.
I don't care how powerful it is, as long as it can output 1080p.