I'm a girl and would always play FE games as male first (well, only in Blazing Sword, which doesn't even matter, and Awakening)..
But usually my main file will be a female one.
This time I think I'll go male Nohrian first. then female Hoshidan.
I actually find the females are not that interesting compared to Awakening, hell, it's the worst batch from all the FE I've played before.
NOHR
assuming there's a semi-incest route for Nohr..
Male Avatar : Felicia > Camilla > Effie > Azura
Female Avatar : Leon > Joker > Marx > Suzukaze
HOSHIDO
Male Avatar : ??? Kagerou > Azura > Setsuna
Female Avatar : Tsubaki > Suzukaze > Nishiki
...It's confirmed that my main file will be Male for Nohr and Female for Hoshido.
My headcanon is Chrom actually has a fetish for dancer hence he can have whirlwind romance with Olivia (or maybe it's her outfit choice is too much for our Chrom).
Eh? But I think impostor male Morgan is much better than the female one
Look:
Female Morgans
Male Morgans
Male Morgans looks totally the same except that bang.
Best tied between Ike and Hector but voted for Ike for having 2 games for himself.
Worst crowned to Micaiah for her super annoying attitude in chapter 3.
It's kinda heart breaking having your unit mostly maxed out with LB gone T^T
I'm kinda sure with the DLCs transfer as long as it's the same 3DS, but I don't know it Transfer Save Data Tools works with FE:A