b. put a base fee multiplier on transactions using certain opcodes (penalise only junk)
I like this option more since at the very least it makes abuse very expensive while satisfying those who claim "censorship"!
But through script size threshold not OP codes because if we place any kind of restrictions on OP codes we may end up hurting regular users who aren't injecting junk into the blockchain.
i already explained in many topics about conditioning the opcodes. so the "penalise only junk" was related to that, having conditions and fees and penalties
i was trying to keep it short as it appears some other people dont read more then a couple lines before they get on the defensive