Did people who criticized the game spend their time playing through the game (100% complete)?
If you played straight through the game (without finding any of the 'side' stages or characters) and didn't like it, playing through a second time isn't gonna make you suddenly love the game.
As I said in my other post, I thought it was OK but not amazing. Definitely better than the SNES 'version' and I would like to have it in my collection eventually.
I imagine if CV4 was the first CV game you ever played, you definitely wouldn't appreciate Rondo (or CV1, 2, or 3 for that matter). I grew up on CV and I think I've played through every 2D 'non-Metroidvania' CV game, and probably in pretty close to the order they were released (except Rondo which I didn't get to play until many years later). Bloodlines was the only one I disliked enough to probably never play again. I play through CV1 and CV3 at least once a year.