Hoo boy. It's been quite some time since I last checked on this, hasn't it?
I'm just dropping by real quick to say that I am currently working on a new update for this wad! It's not dead!
Looking back at some of the old graphics, I noticed that a few things looked sort of cluttered or not very consistent with the overall... "style", I guess. The new update will probably amend that by making a couple of them smaller so that it matches SRB2's sizes better.

...Not TOO too different from what it was, though.
The new update will also allow you to save your game in a CZZ-specific save file!

You won't need to start an entire new save just for the wad either! It seems like copying and renaming your original gamedata.dat file is enough. You can't do the same thing for .ssg files, unfortunately.
Oh, things like the offsets will be fixed, too:

This is the best I could do so that the countdown doesn't completely disappear in OpenGL mode since, for some reason, it pushes certain things downwards.
While the new update will mostly focus on changing the previous graphics a bit, there will still be some new things as well! There's a lot of work that still needs to be done, though, so unfortunately I can't see this being released very soon... Please understand.