Sound like fun, and a darker take on the fantasy setting of Fire Emblem is always welcomed, well for me anyway. The avatar hate imo is really vocal minority and I think the Avatar feature is here to stay. Even Koei wanted a avatar unit but they benched it for some reason. Marriage it might not be in a every game, but an avatar I say it has like 80% of getting in. Heck even Echoes was going to have one but since they felt the Avatar unit would take up Alm and Celica space up it was benched too. In my opinion they should of went with a avatar anyways since Faye and Conrad don't add anything to the story anyways.