- I actually enjoyed Laslow x Male Corrin (not sure if it's the same with Female Corrin). Though to fully appreciate it, you must have played Awakening. There are a lot of suggestions/references Laslow makes that really change the mood of the conversation to something fairly serious, which is a nice break from his usual antics.
- Do not pair up Ophelia (Odin's child) with Soleil (Laslow's child). The C and B supports between the two are a big reason as to why Soleil is considered to be a controversial character. Most of her other supports are fine, though.
- Benny's an underrated character. I could just be biased towards his gimmick, but I like the supports I've seen from him thus far.
- I love Mozu with a lot of other characters. She was actually the first character I ever married in Fates, and I've liked her platonic supports as well. Like Eclipse said, there isn't really a character she works poorly with. Though then again, as someone who grew up in a community that strongly values hard manual labor and outdoor recreation, perhaps I'm biased.
- People say Nyx is another underrated character. Amusingly enough, even though she constantly reiterates that she's very old, people keep thinking she's a young girl. Well, most characters I've seen do, anyway. I don't know any good supports with her, but you might want to test the waters with her.
- Flora's a good character as well, but her supports are very limited. She also comes somewhat late-game, so you've got trouble if you're wanting to grind all her supports out. However, if you marry Flora, then you won't have to worry about screwing another unit out of having a kid.
- People seem to be obsessed with Velouria (Keaton's kid). She's a lot like Keaton, though with the added bonus of her strong affection for her father. It could be because she's a furry, but I don't hate her. To me, she seems like a dog in a humanoid form, which is fine because I like dogs. If you hate canines, then steer clear.
- Camilla isn't particularly overrated, though I think to say that she's the most well-written female character in Fates might be stretching it. Sort of like how she makes a certain other thing stretch in guys, hue hue hue.