I only liked 2 changes so far, regarding Seize specifically.

One thing they did right was design narrow corridors in the map, making for excellent use of BRD/MCH Limit Breaks. As I am playing Machinist this is a big plus for me.

The other thing which is kinda nice is the idea of keeping cliffs but not making them fatal. The center in Borderlands was a death trap and unbalanced for the classes with frequent Knockbacks. Honestly I wish the cliffs were slightly higher up so that they would do even more damage. But the idea of making them not fatal at all, is a good change in my opinion. The fall should be enough to cripple you and force you to retreat and heal up. But right now it seems only to act as a nuisance in that you have to run back around and find a ramp. Oh well, I prefer it this way over outright instant death like we had before, at least.