Add an option to use subj instead of the current one.
That is, Alt+MMB / Alt+RMB, and different direction for zooming with Alt+RMB. In Maya, zooming in occurs when moving mouse down and right, so it quickly becomes a habit to do diagonal moves in this direction ⤡ to do fast zoom in/out.

Create visual popups when a mouse curser is hovered over a node (in node graph) or a parameter (in parameter view).

There's already "help" tag in XMLs, so this is only a GUI enhancement request.

It would be the best if this popup help won't be like usual popup (like in browsers), but instead will be like windows' tooltips from tray area, with the cross to close it.

Additionally, there should be scrollbar supported for very long descriptions, text selection supported for easier reading and image supported for parameters to better illustrate what this parameter does.

Show connected parameters in NodeParamView with ability to break connection or select connected node.

Allows to select parameter's names for exported shader.
Use default name "mascarading" or parameters labels, that have to be unique.

Collect selected nodes to GroupNode

check invalid links after removing

Parameter's group, that can be collapsed in NodeParamView

Add ability to rename parameter label in NodeParamView by LMB dblclk