I'm a little confused here, this isn't the first time I've seen a comment about not being able to switch between characters quickly and easily; the game sets F1 key to first character (all the way to right, hero), F2 to second character (DK), F3 to third character (doll). If you want to select a character, just hit the key, unless you re-mapped it, and that'd be your fault, though I'll admit more hotkeys (a lot more) would have been nice. So what do people mean when they say there's no easy way to switch between characters, it makes no sense to me unless I'm missing something which is entirely possible...
As for the potion problem, once you have enough potions that you don't have to worry about them (i.e. as soon as you get first BF key, *sigh*), just set f6 to medium red, f7 medium blue, f8 medium white, or use smalls until you accumulate the mediums. Granted this will eat up most of your action shortcut hotkeys, but how many skills do you use anyway in a game that really encourages specialization in just a couple? For that matter, give a doll alchemy combine if you don't have it on a character and use nothing but medium whites and get back 2 shortcut keys.
I always know which character is drinking the potion, just don't open the potion menu which is what messes things up. Hit f1 f6, hero healed as long as no one elses potion menu is open. I'll admit f1 f6 while in real time combat isn't exactly the ideal hotkey combination though, especially with one hand on the mouse and the other trying to hover near ctrl key for when you need a new target <img src="/ubbthreads/images/graemlins/silly.gif" alt="" />
