General questions and discussions.

If you think about it that way, nothing prevents creating 2 sets of all heroes and a mirrored tavern. But it takes time and effort.
By the way, here, any other solutions or half-measures are unacceptable.

I don't remember people wishing to remove the possibility of playing with the same starting heroes on WTS, considering it unacceptable. So, this isn't a half-measure, but an expansion of possibilities.
And a completely mirrored tavern – that's great, who would argue with that.