About team compositions
I did think that not having two healers in a match was throwing, but actually, roles are more flexible here. You have great main tanks like magneto and strange that can protect the team pretty well, you have self healing characters like Venom, Thor, magik or black panther and heroes with such high mobility that they can just go for healthpacks whenever they want like the previously mentioned Venom, magik, black panther as well as others like Iron man or Spider-man. Also, you have amazing area healers like Rocket, Adam and Jeff who can solo heal if the composition is appropiate. We'll have to see how the game evolves, but I'm pretty sure there will be some comps that seem strange but are perfectly capable to win.