I can not see a problem with front players having 120 shot loaders. It would mean carrying 100 shot pots which would need no pot design as it is. I cant see the loaders getting any smaller than 120 as at 15bps it goes quickly! But if you look at halos there is a lot of room taken up by mechanics and batteries. If the mechanics were smaller and the battery was taken from the marker then the loader would be able to be muck smaller.
So making the MINI a much lighter setup. Imagine that, a light hopper, stako tank, mini marker and stiffi barrel!