btw: we removed CSFSV from LNhance. you can call CSFS VERIFY if you need that.

Reasoning:

• CSFS is more likely to be used in Symmetry
• In case where CSFSV is desired OP_CSFS OP_VERIFY is perfectly workable.
• Simplifies code
• Don't have an actual use case for CSFSV in legacy rn
• Upgradeable NOPs are scarce
• Backporting tapscript would bring all functionality to legacy