I'm not good enough for G4, only reason I can maintain is that most are indiffferent towards 3v3.
Sure, we can hypothesize "great" solutions like yours. But if it's just more free & easy rewards than it aint happening!
The way I see it now, many don't really care which gold tier they are in. Many intentionally do the G3/G4 dance every other week so they fight solos 12 or 13 days out of 14. I'm content with the lack of competitiveness that exists lol.
I think a simple expansion of tiers (changing a few constants in the code that has already been done once) is a much better solution (and likely) than introducing new tiers. Plus trying to throw in as many free rewards as you can is like throwing tax cuts on your legislation lol.
Do any palyers really want plat 3v3?
I think Plarium more interested in push Live participation, though their strategy suksballz at best.
Replace classic tourneys with Live tourneys
Expand Live windows, more (4 to 10-12), shorter 1 hour, total hours (8 to 10/12)
Increase limit from 4 to 6 primals (I don't think this makes sense for them to do as less than 1% are hitting max of 4, and increasing engagement beyond that likely has 0 benefit to Plarium)