Vault can be done with CTV.
Yes, but it’s convoluted to do so. There’s little downside to having a dedicated op code for it
Do you prefer specific or generic op_codes? One pro-op_cat argument is it's generic enough to do other things. Anti-op_cat is also it's too generic and complex to reason about.
OP_CAT is too generic for my liking
So generic it makes CTV look conservative. 😂