Reasons not to ditch Maeomo:

1. Lots of people like it

2. Lots of software exists for it, much still being developed

2.a. it is relatively easy to port some mainstream Linux apps to it (see, for example, get_iplayer)

3. Lots of people like it

4. Reinventing the wheel will requuire at least as much effort as the Freemantle push to have a version that can run happily and freely on Neo900s as well as N900s with no guarentee of having an end product as easy to use or with any software.

5. Lots of people like it.

In short, if you want to get a new OS off the ground, fill your boots; if you succeed where Mer and Nemo seem to have run aground you will get due kudos. However, I wouldn't want to see effort diverted from Maemo, both CSSU and FPTF, as i'm one of the lots of people who like it...