Enforce a meta limiter for rank.
The idea behind this to stop people from choosing champions that don't fulfill a role "correctly." If said champ goes to fulfill role incorrectly, punish players with;
Lower Base Stats Increased Cool Down Reductions Lesser gold starting
Literally anything that can punish you for going something you shouldn't. NOTE: This limit breaker will be taken off at Rank Diamond and above.
Example for Top Lane: Draven top? Less base starting stats Jungle: Ahri JG? Mana cost, CD. Mid: Quinn mid? Less base stats ADC: Darius Yassuo adc? Support: Oh you chose Ryze for Support? More CD to abilities, more mana cost, less starting gold.
You get the point.