If you did a remake combined with something of your own creation, I think it'd absolutely be fantastic. You'd probably want to specify on the menu screen that it's partially a 3D remake and partially something new, but I imagine there'd be a lot of interest from the Yume Nikki community. I know I definitely would be interested in getting to play something old with a new weird twist on it.
I'm very excited to see what you might have cooking up with this, but I imagine that this stuff takes a ton of work/time to make, so it'd be understandable if you'd rather move on to something else.
Either way, I will be watching with great interest.