I'd argue that by lumping all "serious" users into one league, Nordeus creates one of two scenarios.
Scenario 1: One token buyer is more dominant than the rest and the resulting scenario is one where coiners either scale back or stop buying and in some cases even abandon their teams.
This scenario has initial gains in revenue as coiners will spend more to try and compete against other coiners. You'll see a battle for 1st, involving multiple 7* teams. But the heavy coining only last until it becomes apparent that one coiner has the upper hand on the other, whether it be due to outspending them or being more skilled.
I've seen this scenario unfold multiple times.
Scenario 2: The market is saturated with coiners, so the amount of parity leads to no one dominant team, hence different champs over several different seasons. Since buying tokens isn't equating to trophies, managers scale back on funding nordeus.
This creates the problem of tanking token buyers as well.
Basically, my argument is quality based league draw create short-term revenue growth but over the long-term, that growth might not last.