Rez macros that actually raise someone feel useless to me, I'm going to react to a swiftcast next to my cohealers name faster than a chat message in the middle of combat
actual useful rez macros would be things like "I'll raise <mo>/<t>" which can tell your cohealer that you've got it covered and to not waste their resources (especially good for ASTs, since they're the most busy healer and can't always immediately raise someone but have the best mana econ and lowest GCD damage, so rezzing someone will be a smaller loss than other healers) and "Cannot currently raise, MP:<mpp> Swift CD:<recast.swiftcast>" which can tell your cohealer you can't currently raise someone and notify them of your MP and swiftcast cooldown (if you cohealer knows whats up it's probably a good idea to remove everything except the things in <> to make it faster to read)