I think if there are no in game macros then players with gamepads and other out of game macro capable devices will have the advantage. So it doesnt make sense to try to keep them out because you cant.

macros for emotes and such i would be fine with. macros that give an advantage in combat is a big no imo.

i hate macros in games. imo anything that removes skill from the game should not be allowed.

Should the game be fun enough to play it yourself?

The only MMO's that really need macro's or at the very least should have them are the ones that have 10 hotbar locations in the HUD, ESO won't be like that so I don't think macro's for anything is really needed, maybe for emotes and "fluff" like that...

Given the limited nature of the UI, I'm not sure what you would do with a macro, or where you'd put it.