I did a search and didn't see it mentioned, but on the battle of Hoth, in a few scenes the wing flaps on the snow speeders open on the wrong side of the craft for the direction they are going. The best example is around 28:21 (after the AT-AT "commander" (?) pulls down the viewfinder), where the left flaps opens and the speeders go right.

Having played Rogue Squadron years ago and from watching the majority of the speeders, they get the flaps right, but a few of them are off. If you increase air resistance on one side, you will pivot to that side. A majority of the changes people have listed would have escaped me, but this stood out for some reason.

Awesome job Adywan and everyone else for all the work and releases so far.