After watching some various Mortal Kombat trailers, both of the film, the original song remixes, and of MK 11, I think Mortal Kombat, crossed with Dynasty Warriors, would probably be one of the most fun concepts I could think of to play in recent memory. Just a massive battlefield with minions of Shao Khan, and you and the other champions of Earthrealm, wade into the ranks of them (like several cutscenes from MK 11 show), and just fucking wail on them. Cut to 1on1 battles with the other champions in the middle of the fields, maybe even switch it to side scrolling for nostalgia, kick some champion ass, if you get a Fatality it bolsters your troops, and demoralizes the enemy. Transition out of the side combat and back to the massive battle, and repeat. Both me and 12 year old me would just giggle uncontrollably at that I think.