I don't think any of the players would support that.

This is Heroes, any new feature will be met with resistance from the players. Such things should be introduced based on the benefits they bring, not on the opinions of the players.

Such legalization will only lead to greater imbalance.

And what imbalance? The number of heroes can be set in the template settings; if the number of heroes is zero, the heroes will appear in the standard way.

So, you might ask, what is the purpose of this new feature?

This interface will allow you to implement 2 things:

1) Ban certain heroes on the map

2) Remove certain heroes from the list, i.e., exclude the possibility of them appearing at the beginning of the game for both players

I don't see any imbalance in the possibility of banning logistics heroes on mirror templates and excluding the possibility of Luna appearing for both players at the beginning of the game.

And it's tedious to choose so many heroes every time.

Playing Heroes is a tedious activity in general; every time you have to build castles, collect resources, and conquer objects...)

It's not Dota.

That's not a very good argument