I'm with teOx actually on the potions thing...let alchemists/creators use pot pitcher, just put a limit on potions?
Could do the same with gems, but personally don't think one should limit those. Converters and other items like cursed waters...not sure, I guess it'll give some edge to swordie class players who need it the most.
Can we also up chase walk time to 15 seconds? Its really hard to get the +16str bonus from it if you can only use it for top of 10 seconds =/