I mostly use my laptop like a desktop, so if there was one change to the MBP it would be a second Thunderbolt so I could drive two monitors. Then we'd have a user-upgradeable laptop with speed and strength enough to last 2 to 4 more years.
Check out some of the hardware from Matrox. You can drive 2 x 1080p screens directly from a mini-displayport with this:
http://www.matrox.com/graphics/en/products/gxm/dh2go/digital_me/
They also do a desktop version than can drive 3 screens off 1 displayport connector.