Considering the reaction people had to Awakening pushing Chrom and Sumia together when the game was released, I don't think canonising pairings in a sequel is a good idea on IntSys' part(it wasn't a good idea in FE5 either)
Decided to reclass Louis into a Paladin because the S-Rank Lances looked pretty strong and he capped his speed as a General. Defense is still really high with Ike equipped and he doesn't fall behind the rest of my army anymore.
The weapon locked classes (Paladin and General aside) should have learnt Faire skills at level 5 instead of what they currently got. Since Engage encourages early promotion, units could've obtained them fairly early in the game. The question is if players would be okay with having to fight a bunch of generics that deal 5 extra damage starting from chapter 17 or so.
I'd say Engage is probably its best showing, being better than Berserker and the archer classes. Can speak for the other games in the series though, tend to avoid this class entirely.
It's more likely that the Japanese developers didn't know how to pronounce the names either (I believe katakana is phonetic, and mainly used for the transcription of foreign words according to how they are pronounced) and the fan translations just directly translated the katakana. Official translations do this as well, it's how you end up with names like "Belldandy".
Anyway I think Aoife is pronounced Efa.