> Limiting the maximum size of the scriptPubKey of a transaction to 67 bytes.
This leave no room to deal with broken hashing algorithms and very little future upgradability for hooks.
Can I ask for an example of such hooks for which room for "future upgradability" may be needed, please? I am not familiar with the subject and would like to learn more about it in order to evaluate the argument.
I disagree with the premise that larger maximum size of scriptPubKey is necessary for dealing with "broken hashing algorithms". Besides, I would suggest YAGNI principle.