I mailed support on a couple of issues I'd found over the last week or so with this build, I reported a possibly problem with the tgo populator. ... Ignore that, I think it was the model I was using, the b-boxes weren't displaying at the right sizes, I think it was probably my fault, not TG's.
Could(at some point) there be a 'scale' transform parameter in the painted shader when using the 'plan' views? That'd be really handy instead of just the co-ord' transforms.
This build is definately getting very close. I'd really like the option to assign nodes to the 'input' and 'child layer' inputs of each shader/node, for everything else(translucency/opacity/disp/etc.) there is a pop-out dialogue with 'assign shader' as an option, or the right-click option in the node's external view... If you are in a node's internal network and you have put the input-node or the child layer input-node into the internal network view(from the external view's right click or the pop-out dialogue) there is currently no way to restore those 2 inputs back to their original posotions, on the outside of their node.
Great job, PS. I'll report any more findings here...