It would impact only region importing Russian, (China), in Japan if you import 2 KR you are safe with the rule.
It has also famously happened in China with XLG and I think it would be unfair to ask those teams to remove a key member who they've been working for all year.
What do you prefer ? ask a team to drop a player once they win ascention, as they did every year ? Or ask a team to drop a player during offseason while they where about to drop a player. CN team shouldnt have been able to pick 2 Russian in the first place, it would have avoid so many problems. XLG is the reason why this rule should have existed in first place