Oh man...
Soooo ...
love the goal thingie you have goin' on there.
We do have limited competent manpower you understand.
And it isn't like what you are proposing here hasn't [many many many times in the past] nor isn't [present] considered as new techniques and processes evolve....
Alot of work has been done over the years... aimed at getting just what you are proposing here...viable options and alternative os's ...

If what you propose [as having android on n900 as maemo's successor...hell even having a functional and current Nitdroid that isn't problematic]...
if it is [ever seriously considered] viable it will be tackled I'm sure.
Currently I don't quite think either Android or Nitdroid are there to be the successor to maemo.

And in all frankness.. [and believe me here] ...Nitdroid is interesting to play with...and I like it...but there is no way in a frosty hell I'd abandon maemo for either Nit or Android. And I imagine I'm not alone in this assessment.

It is great to run alt. os's ...but I'm not interested in being locked into one of them. I like my maemo...It allows me to play with others [alternative os's] .

Freemantle is being worked on...[which makes more sense to me...why deliberately abandon work, why deliberately lock oneself into yet another deliberately crippled-up os... when there is serious work going on trying to unravel and free us ?]...
and the neo is coming...which will provide you with [most likely] exactly what you wish...Nitdroid / Android exclusively on device ...or whatever you can beat into it?

I do give you thumbs up on the enthusiasm ..
and hey..I'd love plasma on my n900 too..
and I'm not tryin' to shoot you down here...
but I think perhaps tackling something a little more manageable...with a better likelihood of success ...[the odds still aren't very good yet with Nit/Android on n900...hell Nitdroid was "literally" just raised back from the dead ..since the site went kaput..]
a little less daunting ...
a little less mount-everest-esque to start with...
is a good suggestion.