Rare Flasks

Seems like a interesting idea.

5 separate slots in the inventory, which can hold only charms.
Charms craftable only, combining unique fragments. Ability to combine up to 5 fragments. Combination of certain, very powerful, fragments will produce also negative affixes.
Each charm holding from 1 to 5 of these slots (one slot per affix mod).
Negative affixes reduce the No of available slots by 1.
Each recipe requires a certain amount of chaos orbs or a unique item relevant to the fragments, to create a rare charm with 2-3 mods. Else, it creates the magic version of the charm, with 1 mod.
Charms cannot have more than 1 relevant mods, eg dual or tri-res, attack speed AND fire or physical damage, life leech and armour and so on.

The only "rare" flask I would like to see is a polymorph one. turn you into a kiwi during the effect or something. Or even turn you into one of the random pets already in the game. I think it would just be funny as hell watching a group run around as animals in streams and such....

I think that would go with the cosmetic approach GGG wants quite nicely.