Yes, I've changed the negative glossiness to not be a "bug", which makes it not only more controllable, but also predictable, allowing to purposely design with it. The previous "oversight" could never be antialiased, which also pushed it into a kind of dead end. However, I will most certainly make future experiments to allow effects of its kind, but with proper control.
As for the canvas strength, it now is in healthier proportion to the look of the canvas. It's still just as strong on the fluids, while it continues to look like canvas and the formula is more accurate, too. It will get interesting, once I resume evolving material behavior, I'm pretty convinced about that!
Thank you, Zero. Sometimes it's very difficult to share and develop at the same time, because accidental things can be exciting along the way and people get used to them, but those things beg to be fixed and make way for a better solution, which only new users may immediately appreciate. But above all, it's my quest to stay on top of what's happening inside Verve to consciously progress, you know. The really, really good stuff is still in the making!
Anyway, you were absolutely right. I took another look at my routine and gave the fluids more sensitivity to the canvas texture beyond the current paint buildup levels.