Currently, when you double-click on a subcomposition node, the subcomposition opens in a new window. This feature request would add an alternative way of opening the subcomposition. When opened this way, the subcomposition would be embedded within the original composition. You would still see the subcomposition node in the context of the original composition, but it would be enlarged / X-rayed so you could also see the contents of the subcomposition.
Something that's not uncommon is to double-click on an input port for a node in order to set a value.
If this Node is something that can accept images, and other types, then double-clicking does nothing at the moment.
Proposal: double-clicking a port that has no type set, would automatically set the type to Real, and show the input field.
Just a convenience feature, but I bet lots of new users don't understand that they need to set the Type—it's a rather 'developer-y' way of thinking, in order to assign some numbers.
Not sure if this belongs in the Vuo SDK category, but a node that records/displays the execution time of a node/nodes could come in handy. This to check own custom code nodes, subcompositions or part of a composition. Maybe something like this:
With nested if-then-else expressions and the like the Calculate node expression text quickly overflows beyond the field of view. Either allow the input to accept string expressions (from say the Shared Value node which has a slightly large field for text entry) or just make the field expand when more text is added.