The best multisig protection model is that physical time and distance requirements.

No duress PIN will protect you when they can extract your multisig descriptor from your laptop or a physical backup and check, or know your amount of holdings.

A wipe/brick feature will be as good as giving no PIN.

Physical backups will always be a weakness too.

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Wipe/brick is best used on a post-it note on the back of the coldcard.

What changes?

Except that you know someone tried to access it and failed, and that’s what the failed PIN counter is for

Oh, I didn't know there's the failed pin counter. That would be the main benefit imo.

In some scenario setups, it helps you relegate this semi-hot (easy to access) signer to the physically inaccessible seed sources (at different locations).

I’m working on a lot more than that… :)

Punching seed phrases on steel is a massive liability I'd rather go pure wetware

Data loss. And you can still be held at gunpoint.