Top priority

Add the block/face selection back, but make it look better this time maybe
Add functionality to the extraction node/all the nodes
Add an inventory/buffer node that is bound to a real container inventory that can be accessed from the imgui node
Make a console dockable window with imgui for logging data to the user.
evaluate the need for the properties window (do we want to keep properties soley on the node it's self or push certain things to the side pane)

Medium priority

Create an auto crafter node that uses jei to search items.
Add a redstone node that acts an enable/disable variable input for certain nodes like the TickNode
Makes nodes group-able
Make nodes copy/paste-able
Add a way to check if the given pin is even able to connect to another pin. (a tick node output pin shouldn't be the input of a link node's input pin for example)
Add a filter node
Add comment node

Add a player interaction node for in world automation (see cylic's item user for info)
Unify the node style - uniform colors, and icons that make sense.
Add more icon types/icon renderers.
Add some introspection like if the player wanted to only execute x if y is true. For example the player may only want to export bones from an inventory until there's say 20 left.