For now, the only things that rawcam does better than fcamera is flash support (adjustable brightness and second curtain), and a simpler interface (quicker to use - more like an advanced point&shoot). On the other hand it lacks HDR and stabilization.

Keep in mind it's still the first experimental version for the N900. About the issues you mentioned, I haven't spotted them in fcamera either so I am not sure but I suppose rawcam should not be much better, as it shares some code and the drivers with fcamera.

I wasn't planning to release rawcam for the N900 as it was intended to be an equivalent to fcamera for the N9. But it got good enough, and finally has a feature that doesn't exist on fcamera, so why not give users the choice?