Aww, all this Severa hate saddens me, she and Tiki are my favorite female characters. And why is there no more love for Tiki? I love her looks, her supports, her as a unit, everything! I don't think anyone really hates her, but not many people love her either.
I also really adore Donnel, both as a unit and a character. Him being Severa's father on my playthrough made it even better. By the by, the Cordelia/Donnel support was cute as heck and there is no mention of Chrom. You guys should try it. I just love Donnel's attitude in general. He's a sweetheart and he tries so hard, he's also surprisingly compatible with Miriel, and I love the way that they both sort of admire each other for different reasons. He really deserves more love. I get why people dislike him as a unit (although he turned out quite amazing for me), but I really wish people would give his character some more credit.
Tharja... for me is a strange case. I started out really liking her, I thought her design was cool and her obsession with the Avatar didn't bother me at all, I found it kind of cute. I paired her with Lon'qu, which wasn't much of a standout support in my opinion, but didn't bother me either. And then... the way she treats Noire! I really feel sorry for her that she had such a terrible mother. It might be played for laughs but I didn't find it funny at all. Right at that point, Tharja started to severely lack as a unit too so I kicked her off the team and my opinion of her had drastically changed.
I also personally think Owain is overrated. He didn't annoy me, but I ended up not caring for him much. Gerome also kinda pissed me off with his attitude (specifically towards Cherche when they first meet, especially when she's such a sweetheart) because I don't understand characters like that. I like him more in fandom.