Since we don't have any rough TODO-list of yours dunno if this on your drawing table already but would be really useful if you would consider adding some of the 'camera' functionality from for example Object Builders 3D view:

• ALT + right mouse button + mouse movement: would rotate the camera around the cursor (or screen center?) and selected object
• ALT + left mouse button + mouse movement: would move the camera sideways and up and down in relation to what it's pointing at (like in Object Builder)

The way the camera currently only spins around it's own axis/center/whatever + WASD is a bit cumbersome to have as the only camera movement option.
Constantly find myself trying to use the above mentioned combos because gotten so used to them being in Object Builder.. :P