Why would any N900 owner do that? Surely that's a backward step like buying a N8, apart from it is runnig Gingerbread byt from past experience of SE it is unlikley to ever by updated, OK if you just want a smartphone to make phone calls but not a progressive step.

At present with the CSSU speeding up the phone I can't see any present phones are any better and nothing etc will let you tweak the OS like the openess of the N900?

Perhaps in 6 months the Galaxy S2 or Motorola Artrix might look a good replacement but I can't see anything can beat the N900 which is on the market, at present assuming you are not using a "tired" N900.