Eirika and Gatekeeper got the best art. I don't know who thought Brave Marianne needed to be sexualized when her character is the complete opposite (not just the dancer outfit, but that pose), and the artist's style doesn't fit her either. Marth, poor guy, they could have given him anything and all they did is colour swap him.
Gatekeeper and Marianne seem the most interesting to use. Again... why did they give Marth another sword? It feels like a pretty underwhelming end to his journey to finally win CYL.
Also, as someone wanting Pelleas for a while, I'm glad he's finally in but neither his art nor probable skill set look very good. Generally the least exciting CYL to date imo.