Ah, that's too bad... I usually want to have my files as complete as possible. :/
I'll probably sacrifice Syalla in Hoshido.
Not a fan of the Awakening kids, to be honest. I'll sacrifice Syalla to do my avi a huge favour. :V
For Nohr it's probably going to be Ignis.
Nothing against Ignis, but I doubt I'll use him much. I like all the Nohr kids so far.
I guess for another playthrough I could go with a Kamui-sexual, like Crimson or Flora.