It's worse than that because immutability and lack of human judgement is also the killer feature that smart contracts offer over good old fashioned paper contra

It's worse than that because immutability and lack of human judgement is also the killer feature that smart contracts offer over good old fashioned paper contracts and binding arbitration agreements. Any attempt to make maintaining smart contracts manageable is almost by definition going to undercut one of the main rationales for wanting to use them in the first place.