This may seem trivial, but...
I think vehicles are pretty cool in AO and they are definitely one thing we have in this game that one ups the other MMOGs out there. I just got a vehicle (a Mid, I like it, I look like a Probe droid driving around in it) which surprised me at this low level, but the only thing that bugs me about AO vehicles are their size. There is one model of vehicle that looks like a tiny bot when in use. The funny thing is, there are full sized static models of this vehicle in some cities and the full sized version looks way cool. FC, why not make our vehicles vehicle-sized when we are driving/flying them?
For that matter, what ever happened to aquatic vehicles?
Edit: the tiny bot sized vehicle I was talking about is a Kodiak.