I'd like it so I wouldn't have to look at everybody training on a doll inside town, make it instanced so you don't have people shouting, "Oh wowee! I just did XXXX damage to this doll, lol!" I think of the hostels from final fantasy XI set up, you walk in, ask a host/hostess what kind of monster you'd like to kill, what setting you'd like, and how aggressive you want your foe to be.
Personally, I'd have 40 hyur not attacking, but facing a destroyed wall from some ancient ruins in the middle of the desert. I'd like to practice when Elezen take over the world.