Describe the problem

What steps will reproduce the problem?

1. Just join any raid

What version of the addon are you using? (Stating 'latest' is not useful)

10.2.9

Any additional information? (example: WoW language if not English)

WoW language is german.
The Raid difficulty Icon, seems just incorrect here.

For a normal raid i get a big skullhead with red eyes and for the other 2 (hero and mythic) - i am getting a smaller skullhead. that for sure, doesnt seem to be right.

I would wish anyway beside that problem, that i could customize the icons.

SexyMap doesn't control what is displayed, and I have no plans to customize it. If you don't like it, hide it.