I don't. It looks bloated and distracts from the basic premise. I always imagined Future War a bit like Dune. With John Connor having foreknowledge and how it affects his decisions. It's the most natural evolution of the first two films, imo. Another great option would be an elseworlds story: Batman vs. Terminator. Robocop vs. Teminator. Super Mario Bros. vs. Terminator... But these ideas are nothing without an excellent filmmaker armed with an excellent script. None of the sequels after T2 had those.