I don’t see how there will be a bottle neck. 5 years , 4 , 3 … it will be exactly the same. People in bronze won’t have had a season ticket for three years .. if, let’s say everyone has. Then it comes down to other things like euro aways (add ons)
So if everyone ends up in gold (or whatever group name you call it) then they will operate (I think) similar to Tottenham, (Sunderland which someone has posted) and many others , where you just get moved in to strata’s …. Which Will work exactly the same as tiers so don’t be fooled
There is thousands just now that only seperated by a few points