Camera issues...

So what have I been doing? (...like someone would really care...) Anyway, I have been trying to get my camera to work properly. I think I have come to a crossroads however.

OK, with a camera that allows the user to 'fly' all over the place and in any direction, I think I need to throw out any possiblity of using isometric art and then go with models. I however don't want to do this. Isoart is so much easier to come across then 3D models. I have been toying with locking the camera into 3 or 4 possible angles (just to see around hills and mountains that obstruct view). Has anyone else worked something out or experimented with this. Please give me a holler if you have. I would be very interested in hearing how you handled it.