Grand Arena matching leaves me flabbergasted

I think penalty for zero participation across matches should be loss of daily crystals related to your placement, whilst no deduction on SR to prevent sandbagging. To get the win / loss reward you should still get banners still too so those who participate and lose, losing SR in the process, are not worst off than inactive players. End of season PO should have a minimum activity of at least 1 match from each sign up. Once they are active and participating then daily crystal payout continues and they continue from the same division they were at before the period of inactivity. Preventing a drop to lower tiers full of newer lower GP players but preventing rewarding inactivity. This way if you’re busy in RL it just impacts rewards for a short while and not placement. Most importantly the toxic players I know who purposefully drop to Bronzium through long periods of inactivity, with 4/5 GLs and 9-10M roster for an easy win-streak later (they have seriously bragged to me about winning 30+ when all they need to do is block with GLs and attack once) can not exploit the SR MM. This does not payoff for Crystal income in my calculation but feeds some sense of “skill” for them at the expense of experience of newer and players. I am aware some players fall through not having time or interest but what bothers me most is the intentional inactivity.