When it comes down to retro games Castlevania: Symphony of the Night is considered to be a classic.  Symphony of the Night is a game that deserved a remake for a very long time. Seeing this game on the Switch would be interesting especially since Bloodstained Ritual of the Night will on that console as well.  

But an HD remake of this would probably better off on the PS4 opposed to the Switch since Sympony of the Night started off on the PS1.