Here is a good example of bad party move mechanics.
Notice how painful it is, especially when he is attempting to jump from place to place around the tower. He even has one character drop down and land on Wyll, damaging him... By jumping on him on accident. Lae'zel jumps down first, takes damage, he has to switch characters because the rest won't follow, when he does, Lae'zel jumps back up. So she drops down twice in the end and takes damage again.
This video displays the issues pretty well, I think. He both struggles and is pummeled by the arcane turrets at just about every turn, and then the jumping area is clunky and painful as well. By the time he gets to the bottom, his people are pretty hurt, and he needs to rest. Why? Because he was careless, yes, but a lot of it has to do with the movement mechanics.