I liked what you had, and I like what you did with it, but I wish you had kept what you had and used it along with what it developed into. I like the visual effect of how you made it flowy here, but the first clip had some good variations in arm position and builds. I think a lot of the stuff from the old clip would have made for great transitions. The trick would just be finding the right balance, a la primer theory. If you pursue this, maybe you can play around with alternating between stacking flow and stacking build transitions. I don't know what the right balance would be. It depends on how much flow the transition has by itself and how you use it, but I think transitions like axis shifts and some of the builds you were doing in the first clip can only hold up for a beat or two in general.
I also felt like the new clip was too hand focused. It looked cool, but I felt like I was watching the stacking version of someone limiting regular liquid to their hands.
The floor thing was cool, the stacking as a transition to change levels works really well.
Everything you do makes me feel like I'm watching an old claymation video. It's pretty cool. Do you do that for real, or is it the camera?
Stacking looks like it would make the sound a motor boat makes when you're starting the engine.
Anyways, great job! I might give this a shot to mix in with some liquid/tutting.