Kill two birds with one stone. Remove Darkside's animation completely, and add it to Walking Dead instead. That will make two groups of people happy!

Honestly, no one needs to know that you have Darkside on except for you. On the other hand it's very important for others to know that you have Walking Dead on!

No ability should require a macro to instruct players how your ability works. However, it is also a mistake to assume that healers who "don't do the research" are useless to you; they're fine for casual content, and it'd still be nice to avoid the occasional Walking Dead death in Sastasha (Hard) or whatever. By giving Walking Dead a visual indicator, it's a much better tool for instructing inexperienced healers. Once they see someone get a wierd aura and then die for no apparent reason, they're likely to ask what happened - and not make that mistake again.