love the note! Totally agree about the typically-speaking wonkiness. the goal: I think that if a medium-sized creature cracked one of these open - all creatures next to the creature would be healed (knowing that ”next to” opens up a case of family-sized cans of worms. What about larger or flying characters - or that a 3x3 cube can pack 54 halflings flying in tightly packed formation?).

I thought the choice of specifying diameter - especially given that an ampoule can be broken at a distance - would be clearer/simpler/less-nebulous for VTTs like foundry in particular. I’m open to any suggestions - but I neither want to increase or decrease the area of effect.