Just a thought and one that has been said before but I believe it is better for both the players of the native region and the teams if they just allow one single import. Like what is even the point. You import all these guys from these different regions and build a superteam only for it to break the second you get to tier 1. It doesn't help anyone rather hurts the team and the local ecosystem.
Look at RVNT from last year or more specifically Xi Lai Gaming.
Having one import just helps the transition way better than whatever we have now.