This is a great way to handle it. One should keep in mind, however, that if you want to mark the spots between each party's two platforms
and maintain the back-and-left precedent, you should mark these specific platforms:
If you mark them A-left B-middle C-right (as in the left diagram), after the landing, the parties will be on their left platforms, and Crush Weapon can pose some confusion as people try to decide between running it left or right.
The bleed bubbles shouldn't pose any major confusion: each party has two bleed bubbles and two assigned platforms; place them on your own platforms and not on your neighbors'.