Ended up figuring out a VERY insulting combo with Dormammu and Frank today that makes some interesting use of having a flame carpet just off-screen.
This combo is corner specific and does not work on every character (tested with Tron, Rocket Raccoon, and Chun-Li so far, and only did not work for Chun):
(j:h:), j:s:, :d: :d::h: :s:, super-jump, j:m: j:m: j:h: j:s:, land, :a1:(Shopping Cart) :df::h:, :s:, super-jump, j:h: j:s:, land (*), :s:, super-jump, j:h: j:s:, land, :df::h: (*), :qcf::atk::atk:, (*) :qcf::atk::atk:
Total damage: A little over 1,000,000
(*) - All parts marked like this have the enemy “bouncing” oddly off of the flame carpet in the corner. Characters this does not work on get hit normally by the flame carpet rather than spending a long time bouncing off of it.
EDIT: Decided to do some more thorough testing to see who it does and does not work on. Other than Tron, it seems to only work on smaller characters. After it failed on many different average sized characters, I stuck to trying it out on those of extreme size or odd stature, and got the following results:
Works On:
Amaterasu
Arthur
Firebrand
Rocket Raccoon
Tron
Wolverine
Viewtiful Joe
Doesn’t Work On:
Chun-Li, Chris, Dark Phoenix, Deadpool, Doctor Strange, Frank West, Ghost Rider, Hawkeye, Hsien-ko, Hulk, MODOK, Nemesis, Nova, Phoenix, Phoenix Wright, Sentinel, She-Hulk, Spider-Man, Strider Hiryu, Super Skrull, Taskmaster, Vergil, X-23, Zero
Probably does not work on anyone not listed. Thus, basically just a stylish way to kill off any of the mentioned characters if you feel like slapping em around.