Correct

Slightly less retarded idea is to invalidate future blocks with OP Returns greater than 83 bytes but you're probably not going to get consensus for that which would result in a fork and I'm sure someone smarter than me could come up with a reason that breaks everything

Yeah that sounds about right. If it were up to me I'd strongly consider limiting them to 160 bytes or some other similar, reasonably small amount.

But the debate is... well there is little serious nuanced debate happening.