FlareHabanero
Banned via Warnings
For a new character in particular, the character in question needs some sort of characteristic to make people want to play as the character, even if you're not familiar with them. Fire Emblem is probably the hardest to do that with considering that the more notable characters don't stand out a lot, with the more distinctive ones like Micaiah and Hector often being overshadowed by another character. One thing for sure is that Chrom and Lucina are not promising choices in the long run.Sad, but true. Not sure an FE character would be good for a trailer, reactions would be probably a mix of "Who?" and "this isn't Roy" and such.
Personally speaking if we had to get a new Fire Emblem character, Lyn would be a solid choice. The super flashy attacks she preforms are really cool.