To me, multisig feels vastly superior to seed + passphrase.

A big reason is because I can be a little more relaxed in how I backup my seeds.

If by some insanely bad luck, someone gets one key, no big deal.

If I lose a key, no big deal.

I can give keys out to my trusted family as a backup and an inheritance plan without them being able to steal from me.

Not to mention brute forcing will never be a thing.

In short, please experiment with multisig and see if it's right for you :)