I'm convinced the Playerbase would have been bigger now if that would have been the case.
But now, I sadly agree it would be a risky move. Playerbase is quite small and this could split it and increase queue times to a level that could break the game.
And as others said, matchmaking would need adjustments.
Though official Stock mode weekends/events might be a good idea.
Edited by Trystan Thorne, 20 December 2017 - 08:11 PM.