You know, I was looking at the Bloodborne wikis and realized that I, without really meaning to, had fundamentally redesigned blood vials for the RP without really explaining this redesign (because I wasn't conscious of doing so). As a reminder, their design in the game was this:
[HIDER=Original blood vial design][img]https://vignette.wikia.nocookie.net/bloodborne/images/4/4e/BloodVial.png/revision/latest?cb=20150327182101[/img][/HIDER]
Which doesn't make a whole lot of sense to me considering how Hunters use them (by injecting them into their thigh), unless the Hunter is actually supposed to take a bigger vial, draw its contents into a syringe and [I]then[/I] inject themselves. Conceptually, the blood vials of the RP will mostly follow this design:
[HIDER=RP blood vial design][img]https://i.imgur.com/t2ErHb1.png[/img][/HIDER]
A small, narrow glass vial with blood, fitted first with an inner cap with a needle for syringe-like injection, and then with a second outer cap that shields the needle. If that makes sense.