The outdated hardware on Neo900 is going to happen - But what will make it great is the optimisations and software build FOR the hardware and vise versa (similar to iOS/iPh).

Look at the Open Pandora - Same hardware, yet some of the software runs so much better on the single core OP then on my big *** quad core android phone.
Like PPSSPP, N64 PSX etc..

If OP adopted Maemo - Awesome! Would be better than LXDE IMO.