MMS can be an important update to have on N900 but right now MMS is not too important. Since we all are wanting our N900 to be usable in portrait mode right? It's better and more convenience when you can type using just one hand to replying messages and operate the device.

But it would be nice to have it both coming. Most importantly is to get all the bug fix before any functionality, and providing video chat using Pidgin or aMSN, Office Suite...etc. those are the killer apps. MMS is not a killer app. The desktop porting apps that made the N900 invincible over other smart phone in the market at the moment.