Honestly? I think if Inno went the way you suggest it’d have the opposite effect longterm. The game only has appeal as long as the worlds are populated with enough players. If you make it too skewed to pay to play then you’d lose too many players for pay to play to remain viable.To tell you the truth, I am happy there was NOT a diamond "separation".
But I think if Inno was serious about making money, that would be the best way to go.