We'll likely have to wait until 2024 to get a more solid idea of what the ride system could be. Many including DSNY Newscast's Jack have speculated this Avengers E ticket will use some form of the Peter Pan ride system from Tokyo DisneySea. That in turn will be a Simpsons Ride like ride system or a trackless ride. I think it will be the former as in that ride you go flying with Peter Pan so it would make sense for it to be a ride where you are lifted in the air. And since the Quinjet is still of the roof it would make sense for the E ticket to involve flying through the air. And for those hoping that DCA would get a family friendly trackless dark ride like MMRR, I would bet that a trackless dark ride will be part of the Hollywood land revamp once Disneyland Forward is approved and the revived eastern gateway is built freeing up the transportation hub behind DCA.