As stated, being able to export to an AVI. if you have please tell me how. also an offline editor would be cool.

How about subdivide a face?

terrain and heightmap tools

Because it is sometimes difficult to quickly understand where you are viewing the scene from, I suggest you add more clues like colours of the axes on the centre lines of the grid and/or a small axes indicator in the corner of the view.

More free scenes :P

UV MAPPING + TEXTURE GENERATION + PROJECTED PAINTING

Annotations
I'd love to be able to attach annotations to models (like on sketchfab)

Clone popups dialog box every time, very depresive if ya need to duplicate lot of stuff :)

p.s short keys !!

Import Skp file

gas textures

Soft Selection

LuxRender, Blender Cycles, or Corona Renderer support.

Importing sites via maps coordinates (say with Google maps), being able to populate sites with people.

For a bit simpler animating

Better animation toolkit, with IK/FK retargeting
Better deformation
Enhanced UV editing/unwrapping tools.

Support openjscad

Assembly animation and add .mp3, .wav, and other audio files to the importer.

3ds Max style spinners. They always increment by 10% of the current value. This makes it a lot easier to adjust very low or high numbers. It's a small feature but very intuitive!