Guild Wars 2

Forgive me if I’m misinterpreting your suggestion, but correct me if I am wrong. For majority of the tonics there are separate specific tonics for the specific transformation your all requesting? Yes it may be slightly cumbersome to fill up your bag with tonics but then again why not just purchase/craft/mystic forge/obtain the specific tonic and have the endless random tonic you currently are in favor of? The necessity to rewrite the code (if that is required) to generate the same response may seem a bit low on the priority scale in my opinion, anyway my 2 cents ;0)

Are these one time use?