No real reasons to switch from Corona as of now, so I’m staying. :)
Unity is just an awful mess to me, and UE4 is pretty meh when it comes to 2D, so if I were to switch to something with an editor despite hating those, I’d go for Game Maker Studio 2. It was the least revolting to me out of the three after some basic tinkering.
Stuff like LÖVE and MonoGame is also neat due to the overall workflow being a lot more like Corona’s, so those would be most likely replacements for me.