The keyboard really is great, but don't forget the form factor does come at a price - slower CPU (not even binary compatible with the N900), no microSD (-16GB flash) and smaller (non-replaceable) battery, which would certainly not help in a Maemo context. USB OTG is OTOH at least as much the question of software as it is hardware (i.e. Maemo would likely still require extensive hacking to gain proper OTG on current E7 hardware). All in all, I'd actually say that if it had Maemo, I'd rank it somewhere between the N810 and the N900... Which doesn't mean it's bad, just that it's a way better Symbian device than a Maemo one.