The problem with making it the premo ACT 1 set armor is that you then have no reason to use anything else you find. It's a double edged sword, because then you have people complaining that they pretty much have to get this best-in-slot armor set and gathering the pieces becomes a chore, rather than something that is fun for those who want it.
Ehh, there is always some best in slot equipment, so you could say the exact same thing for the currently best equipment. Also you will still have 3 other chars, unless you are going for some lone wolf action, so other gear will still have its place.
