In fact, I was thinking about a Chrom & Robin slot for my newest roster, a sort of gameplay mix between PKMN Trainer, Sheilda and Rosalina, representing Awakening's most important characters and main feature (double characters battling) at the same time :
- While you're controlling Chrom, Robin follow him on the battlefield, a bit like PKMN Trainer who follows his Pokémons, but does not count as a second character ala Ice Climber.
- Some of Chrom's and Robin's attacks work with both characters.
- You could alternate between Chrom and Robin like for Zelda & Sheik.
- Chrom is more sword-oriented, while Robin is more magic-oriented.
- When Chrom is KO'd, the player lose one life, and Robin takes over without Chrom.
- Then, some of his/her attacks doesn't work as well as when he/she is accompanied by Chrom.
- The player could re-have both Chrom and Robin after he gets KO'd a second time.
- Finally, Chrom works with Female Robin, while Lucina and Male Robin could be an alt for this slot.
And that's it for my idea for Chrom & Robin slot.
EDIT : I guess it won't be approved by most of FE Thread members.