In terms of marketing, I think it might be best to split up the 3Dvanias. So it might go something like
>Rondo, DXC, SOTN, 64, LoD
>Chronicles, Rebirth, LoI, CoD
With the remaining games like Legends and Vampire Killer distributed between these two.

Also, it's a never ever but I'd like them to include translated scans of the manga made for SOTN, LoI, and CoD.