Giving the recent developments with stable framerates + higher resolutions for video recordings, i do not see a necessity to substitute Maemo 5 + CSSU with something different other than for developers & HW hackers. I freshly installed mine yesterday and it's a breeze.

If you want Android, buy a cheap Android cellphone with unlocked bootloader to use it with CM. If you want something with a "Meego" base, either buy an N9 or... dunno.

Maemo is perfectly fine.

If you want something with recent / popular "apps" (like that Whatsapp crap), buy a cheap *droid anyway. I still have to read valid reasons why people want to taint a N900 with Android or other non-finished stuff, when all they want to have they could achieve with a cheap (possible chinese) *droid.