Well I for one am really excited about this, will it lead to a second generation like FE4 and the implications upon the story itself. Also I always enjoy playing matchmaker in Fire Emblem. Though I reckon my pairings are usually boring and tame compared some here but hey whatever. If they are ballsy enough to include some homosexual and/or bisexual relationships doesn't mean a damn thing to me. I pair the characters the way I want to, and that's it. I've rarely have a opted for the best technical support pairings.. that's just so cold and uninteresting.
I'm curious how children will work out, if we do indeed get a second generation.(I'm really hoping that we do.) Will we have them based off the mothers and how are we're going to handle stats. Also war orphans that aren't blood to their 'parent' hopeful they won't be as shoddy as the 'replacements' characters in FE4's second generation.
Hopefully we get some worth while support conversations also. I really don't want to see another Radiant Dawn in terms of everyone can support everyone if it means craptastic generic dialogue. Though if 'destined' pairs get fleshed out dialogue while supposed 'crack' pairings get a little less fleshed out I'd be okay with that.