Hi there, I'll answer as many as can.
1. Unfortunately, this is hard-coded. Can't be changed.
2. I would guess that's to save some performance while moving.
3. Yep, see the various tutorials and examples.
4. Apart from an animated texture, I don't think EE can do this natively. However, you can implement something like Berkilium in combination with a shader to project webpages on a surface.
6. No, and doesn't look like it will in the near future.
7. Esenthel does not provide such tools.
9. That's correct, a single license (which you can use for your entire team) for a single project and you'll get all of the future updates.