I guess we as end users are entitled to have the general expectation that Nokia would make the best of a modernizing gadget like your phone, and that that includes having a vision about certain (future) needs of the end user.
You make it somewhat sound if you have been misled to paying for a front camera, but I have to ask then "but has that front camera been so much propagated/sold then?"
My vote goes not so much for Nokia making a front cam application as for an optimized hindcam app and for them to boost up audio functions (notably the possibility to record from external stereo mic) so I hope t h o s e interiors will be put in some spotlight. Anyway all is for Nokia to present to an important group of users, isn't it?

But hey who knows what surprises we may still expect, I'm convinced Nokia knows the N900 audience. Best would be that Nokia did its best not to block free developing.