There are a lot of removed levels in MKFusion. Some are partially assimilated into newer ones, others get a complete overhaul, and then there are some levels that are completely replaced altogether. It's a shame, because some of these removed levels I really enjoyed, like Tetra Machine, Haunting Spookscape, and the original versions of Terra Edifice, and Lair of Leviathan.
I think these levels should return, but instead of pestering the dev team to undo the decisions, they should make a level dedicated to these removed levels. It shall be called The Vale of Forgotten Worlds or something similar, and it's located in the final world, Twisted Reality. It's basically an amalgamation of all the levels that were removed; it doesn't use the whole levels, but rather bits and pieces to make one big level, complete with glitching textures and surfaces to give off the feeling of erased worlds long abandoned and disposed of by The Fusionist. Who knows, maybe we can even re-add the removed enemies and mini bosses as well.
Let me know your thoughts on my idea.

You can use them if you like, I don't care.