Have fun in Cyrodiil with no combat feedback then!
By the way, the problem with mods is that often they become outdated and broken by patches, and especially in the early life of ESO there will be multiple patches and it will be a modding headache.
Let me see if I can find that video I'm talking about. Ok here it is: https://www.youtube.com/watch?v=-18qjhldUZM. I'd hardly call that cluttering. You can tell when he's hitting, missing, healing etc. without it cluttering the screen.
I can tell you all right now that if you want to be competitive in Cyrodiil you will need a mod like this. You will not be able to compete without combat feedback.