Yeah Chrom is married to Sumia (I am right after the timeskip), as I used neither Sully nor Maribell, I am playing a a male Avatar and I want Lucina and the other kid to have good stats right of the bat so Olivia was also off the table and i actually like Chrom/Sumia
I think I'll give up on making Lissa combat competent, she has good magic so is healing is fine but :T
And yeah Robin needs a little help. Kinda weird seeing an Avatar not kicking ass, thought about marring him to Miriel to get two really good magic children, but I don't know if i get to recruit any children in time besides Lucina and Cynthia because support growth is kinda slow without pairup. I am planning to go Grandmaster for Ignis (at least he can use his good strength here, right?) and then Sage for good magic with Robin so reclassing into a speedy physical class would kinda screw with that plan.
I also have left over secret book, dracoshield, and talisman, I think I'll give the dracoshield to Sumia (9 def), and the talisman to either Lonqu(5), Panne(3) or Chrom (4). No Idea about the secret book though, maybe Robin(14) aswell?