Was just thinking abut the xp mask...as nice as it is...taking up a bag slot. I was wondering if it would be possible to make it so you combine it with your current tier mask (so you could get benefit of having the worn item and the clickie to keep from switching them out) or to maybe give another line to add aaxp to each tier...which ever way you prefer. I would think the combine would be better since are so many items with explosive stats already, just to keep it from a possible nerf bat later. Just a little thing for you to consider.
That would require a combine for every tier + every rank of mask to be added, as well as the items themselves. Thousands and thousands of items and combines added just to save 1 bag slot. Sorry to be the party pooper but I'm gonna go with -1