The Eiji and Zantetsu pic doesn't necessarily mean anything. They're probably just pointing out that the two are related by family, Zantetsu is an ancestor of Eiji.
Hmmm... Hotaru is fine I guess, it will be interesting putting her against Akari. I play Moriya quite a bit too. Never liked Robert. Lee... well, it's someone we didn't expect at least.
Oh, and Robert has a load of different sprites. There's his AoF1 sprite and the KoF version (white/red/orange), his AoF3 sprite which is also in KoF (blue/white, not exactly this one), and a new one he got for KoF2003.
After seeing Hanzo, Fuuma and Kisarah, I'm only hoping for Roomi from Galaxy Fight. With her this roster would be perfect.