I was fine, it's just another match I screwed up because I didn't have Triangle Adept on Eirika because of using HP+5 to raise rating that I lost to a Vantage Hector.
This is why Eldigan was so good last season, he easily tanks Hector.
Intriguing. I would never use it on offense though, I can't stand that slow movement.
Nino is + def, -res, I can at least raise her to 20 and keep her around in case I eventually pull some good supporting units for her assuming that's not an awful iv setup.
That's nature is a wash, might as well be neutral, which is fine. If you want to build around her, FemCorrin has Hone Attack which isn't a terrible start. Give FemCorrin Rally Speed from Caeda, Gaius, or Seliph, and you'll have the start of something good. Olivia also has Hone Attack which is redundant, but you could theoretically give her Fortify Resistance.
Or give FemCorrin Rally Resistance and give Olivia Hone Speed. You get the idea.
FemCorrin, Nino, Olivia in this scenario has potential. It could work. +16 attack from buffs assuming all of them are Rank 3.
Oh, and if you can help it, get Nino to level 40 each time before promoting her. You'll be thankful for the extra SP later.
Effie.. Effie just murders things if they get near her and shoves units all across the map for funsies.
I just really want to know who else in my roster has potential and who give skills that help my current units be the best they can be.
If you want to build around Effie and don't mind promoting and sacrificing a 5* Donnell you can give her Brave Lance+ which is absurd on her.
Your red situation is indeed pretty dire. I would've blown all my orbs pulling only reds on the Princesses banner if I were you, but what's past is past.
There is no slam dunk with your roster but given the alternatives Nino might actually be your best bet. Here's a quick guide if you want to go in that direction:
Olivia inherits Hone Speed 3 from Matthew
Corrin inherits Rally Resistance from Cecilia