Apparently there are a couple different track proposals, with various different budgets. I haven't seen any of them, but the one I was told about would have multiple launches and consist of a lot of helixes with separate "rooms". Remember the original plan for Cosmic Rewind was to have a few show scenes, including some with AAs. Apparently the Iron Man AA in Paris will be pretty impressive, will this omni-coaster feature more scenes at the expense of a smaller track... very possible.
Either way, the E-Ticket for Avenger's Campus is either some variation of the omni-coaster, or a cloned FoP. The days of researching and developing a new system is sadly over for this attraction, that I know for sure.