A couple thoughts about the newest clip..

In the shot from Luke's POV after he crashes, the AT-AT looks too far away. Actually, it looks like it's out in the middle of nowhere since we don't see Luke or the speeder to compare it too. Same in the next shot of it approaching Luke's speeder. It still looks like there's plenty of time for Luke to get outta the way. Then, suddenly, it's about the step right on him.
This has always bugged me. It kills any tension the scene could have going for it.

All of your new touches are great though!
Just wondering if those two shots could or will be tinkered with any more.