I agree, it is too much
Ann for a sibset.
Anneliese is too common, but I'd use it if it had any significance to whomever I marry.
Annika, on the other hand, I love and would definitely use if I had the chance. It goes along with my heritage and I have an Aunt
Anne for a namesake. Plus it's just pretty. ^_^
nn
Anna if I had to, but mostly
Annika.
I'm actually using this name for a story I'm writing, full name:
Annika Gretchen Norling.