With foreigner rule limit every Russian team has to find at least 20 domestic(Russian) players to be competitive in the league. That's what we have today.
Because of that rule inflation in the Russian hockey market is enormous, market is not prepared for it and we see average players cost more than they real value. That is created for two reasons:
1) Russian hockey market is relatively small and cannot sustain and produce talent pool that KHL desires at affordable prices
2) High end talents still prefer the NHL and when they're gone( and there isn't much of them in the first place) russ teams are left with less skillful players to satisfy theirs ambitions.
That leads to conclusion that KHL teams need much more money than it is need to be competitive in the high end hockey.
With foreign rule gone teams like Loko and Atlant could at affordable price create much better teams than they have now. With that in mind, we should see teams like SKA and Ak Bars be more active on North American and European market, and sooner than later we should see high end Swedish or American prospects in those teams.
With no foreigner rule competitiveness in the league would change drastically in a good way. That would also mean that highly overrated Russian market would be putted under control.
Yes, that means that lot of Russian players would lose their jobs and would be forced to explore the possibilities that they would never explore before in the foreign rule era.
That move could destabilise and cripple the Russian hockey market on short road but when junior teams and players realize that to survive they need to constantly change and adapt while working on their skills we could see a new era of Russian hockey boom.
It is a risky deal but it is a necessity in todays world.