
LoL’s success is because it’s a casual game.
It’s not about making the first one more fair, you aren’t going to have 100 characters equally valuable on a single map while making those characters unique.
If you have 10 maps though you can make those 100 characters equally valuable as a combined average across those 10 maps.
Though that matters more in a competitive game than a casual one. Actually LoL’s lack of skill based competitive nature is likely why they don’t do that. Someone who plays once s month will have an easier time learning the game if it’s a new character that does the same as everyone else than if there’s a new map that makes the characters have to play completely different.

LoL’s problems come from it. With no map variety the only option is more characters.
And due to this whomever is best at that map is the best. It leaves a lot of dead characters and variety can only come by changing the characters every so often rather than having a map that fits their given strengths while another highlights their weaknesses.
but windows binaries will not run directly on Linux hence they’ll need reinstalling in that case.
Create a wine prefix, point it to the binary.
On Lutris this is “add already installed game”
On Steam this is “add non-steam game”
Though if you point your steam library to the location of the games it will detect them as already installed, then you can go to properties and tell it to use proton or set all non-linux games to use proton. (Proton is a wine wrapper with a steam dependency)
The very first game on the list;
Absolver - Boss re-matches are locked behind an online requirement. Boss loot too. As well as some techniques that can be used in offline play but can only be learned online. Absolver also installs the invasive EAC anti-cheat software even for single player and won’t start without it.

Wouldn’t this work?
It still leaves some characters as bad or unplayed at any given time.
Chen under 1% according to this. https://www.dotabuff.com/heroes?show=heroes&view=played
If you had a 2nd map that gave the inverse of that then all of a sudden the game is better.