It's worth noting that Rock Band is only distributed by EA - MTV is still technically the publisher. Bioshock is not an EA game at all, it's published by Take2.
Ever since Riccitiello took the helm, there has been a real shift towards new IP and ideas - other new franchises/games that have come out include Boom Blox. The problem there is that such development is always very risky, financially, so it is even more critical that any sequels that come out are still as successful as before to help offset any losses. Mirrors Edge looks to be great, but it could just as easily fail just for the reason that it is something different.
Me, I'm waiting for a sequel to SSX, for the 360. SSX3 was one of my favorites.
As for the DRM, it's actually very low impact, and doesn't install a service if installed on an admin enabled account. The service is only needed for non-admin accounts to run self decrypting executables. The registry entries are isolated to a software-specific area. The 5 installs is only on separate machines, and they've made strides to allow you to de-register (also you can call tech support and they'll fix it up for you pretty quick).