I have an unorthodox pick for that but it's based on not knowing Japanese.

I imported MHXX from Japan on switch and never learned about weapon arts so my first playthrough was entirely guild style with only ever unlocking the swift dodge or whatever it's called.

GU is honestly probably my favorite old mh because of this and I did another "No weapon arts guild style only" playthrough with a friend a year ago and it also became his favorite.

Since this really isn't the intended way to play I'd say FU is better, but if you've never tried that challenge in GU I'd really recommend it.