I don't believe that there is a need for Castlevania 3 to be made a Chonicals game. It's perfect as it is. Ported, yes...but it doesn't need to be remixed.
Choronicaling Rondo seems logical being that the game was never released here in the States. So there for, it can be viewed that IGA wanted Rondo to feel the same to us as it did to those who got the original when it first came out.