should really look into lowering MMR for inactive players
especially those plat+ players who barely play 10 games a season just to place high and then wait till next season to do it again.
im talking like 30 ranked games in 3 years.
its extremely fishy for them to be this high on the ladder.
cough cough ranked rewards only cough cough
at least introduce some form of extreme decay, like 6 months of nothing.