Granted remakes are a few too many these days, but I would LOVE a CV3 remake, using the SotN level sprite work, w/ Alucard and the rest made into a more playable charaters (like Trevor could have moves similar to Richter, ect, ect...). Obviously you'd have to include the original CV3 in it.
CV3 is IMO the best of the really old school. Each of the original three had their merits, but CV3 blended the best of the first two, allowing for enjoyable boss fights as well as player determined exploration.
Actually, now that I think of it, what would really love is a compilation which includes the following...
- CV1, 2 & 3 originals
- Super CV4 and Chronicles (to cover CV1 remakes)
- A remake of CV2, w/ a redesigned castle and overworld layout. Most importantly each castle (including Dracula's) would be redesigned to be more like stages within the castle, and would contain bosses both mini and main. Finally, the Dracula battle had better be challenging
- The CV3 remake I mentioned before
- Be DL'able on XBL and PSN.
Konami would probably do something like this as three compilations, one for each of the original three.
OR
As someone mentioned above, CV5. As a DL'able game on XBL and PSN, and be old school sprite based 2D, stage by stage w/ multiple paths and playable characters like CV3.