Well... I won't say "stupid." :-) But I will tell you when I don't like them.
Isis 'Ice': Not a fan. It's too much of a friend-ish casual nickname, kind of like something you'd yell at someone to get their attention.
Freya '
Rae': It works, and I think
Rae is cute, but
Freya doesn't warrant a nickname, IMO. It's short and not at all complicated. For consistency's sake I'd go with Rey, if anything.
Ophelia '
Lia' or '
Phebe':
Lia, sure.
Phebe, no; it's too much of a stretch to draw on that particular sound that isn't there.
Fifi makes more sense to me, though it's definitely not my thing.
Indiana '
Indy' '
Anna': I can see
Indy, obviously, but I don't care for it. Then again I don't care for
Indiana as a whole. :-) I'd rather see
Annie than
Anna.
Anna is too "whole" to me, but
Annie is something I associate with a nickname. If I had to pick a nickname for
Indiana I'd go with
Didi.
Aurelia '
Aura' '
Rae' '
Lia': I'm fairly equally neutral on them all. All feasible, nothing very unattractive. I like
Rae most between them.
Beatrix '
Bee' or '
Trixie': I'd go with the 'bee' sound but the spelling
Bea. I guess
Trixie is an option, but I really don't like it. :-/ Too... something. Too fictional, too reminiscent of a cereal, too glitter and sparkles, or something.
Constance '
Connie': Aw, I love
Connie. I could see
Stacy as a nickname, too, even though it doesn't include the second N.
Bellona '
Bella' or '
Ella': I 100% don't like
Bella and
Ella. I'm sick to death of both of them. :-/ I'd like Lona very much, though.
Leonora '
Leona':
Leona's too much of a full name for me to like it as a nickname. I'd opt for
Nora instead.
Alright, maybe I'll come back for the guys' names later. :-)