The work it would take to bring MeeGo or Maemo in line with it's rivals would take at least a year, the whole time those rivals are coming out with more and more powerful devices.

Imagine, a slimmer N900, 4gb Ram, QHD 5.7" screen. A pressure sensitive pen (like a Wacom) and a decent quad core processor.

Definitely be a wet dream.

I think the closest can get to it at the moment is the last Blackberry phone to come out (priv), someone with the right inclination could make a very nice custom rom for that