I find the persistent Darkside animation too big and distracting.

[One_Time]

They should turn it off in town at the very least - instead of annoying people with it.

I don't think its my intent to be annoying to anyone. I can't speak for all, but it is just something I don't think about when I leave a duty. If someone said "hey you are annoying me with that Darkside effect, can you please turn it off", then I would have no issue turning it off.