I have three inquiries, two of them being fairly short.
I have completed Birthright and am fairly close to completing Conquest (and on my way to starting Revelations).
When playing Birthright, I had no idea that Revelations featured almost all characters from both Birthright and Conquest, so I put hours and hours into Birthright maxing all of my characters and having children, and maxing them. I'm sort of frustrated knowing I could have simply done so in Revelations.
1) I have taken interest in the Unit Logbook. Let's say in Birthright, I put my Saizo on the Unit Logbook, and in Revelations, I recruit that Birthright Saizo. Will that Saizo take the place of the Revelations Saizo? If not, will I be able to do Support or have children with him? How does he differ from a regular Unit? I just hate to see my training go to waste.
2) How does recruiting my Avatar Unit via Unit Logbook work?
3) After Conquest, if I do not purchase DLC... am I sort of just stuck, with no grinding to do? That's what I have read.