The beauty of MIB is that you can get so lost in the competitive nature of it that the ride doesn't event have to be updated that much. The queue is phenomenal, and the layout of the ride itself is fine. Long enough that it feels worth your time, but not to the point that it feels like overkill. Update some of the scenes themselves with new AAs/targets, and spruce up the post "red button" cooldown thru unload portion of the ride so that it's not just black walls.
To me, its a staple of the resort. Everyone loves a little friendly competition with family and friends, especially when its in the form of a ride and not some skills game that you have to pay extra for.