Highest placing team in a region should be forced into the tier 2 circuit for a year after winning.
Very likely the team will be relegated and go back to GC, but then they can bring the stuff they learned in tier 2 to GC and help GC actually become a respectable league.
After a couple of years, there will be multiple teams in GC that have tier 2 experience and it will help IGLs and coaches develop the players in an unimaginably better way.
Of course, tier 2 itself needs to be sustainable for this.
Le0 F0ri0 make your fucking tier 2 sustainable you bitch.