Im not against in this, and im not saying its impossible to farm stacks of infi. My only simple point here is, just make "untradable" the items in exchange list!
I dont care if players will farm 24/7, or pressing 2 or 1 button lols, this is not the point here.
Again my only simple point is make the items in exchange list "UNTRADABLE".
And you can do whatever you want ^^
Untradeable would help, but it would also serve to inflate the prices of tradeable once the supply dwindles again. Then we will be seeing prices go up to dumb prices. I see your point, but I think in the long run it will do more harm then it would good.