Maybe using Smokris Reinterpret node there could be an even easier way to achieve this.
It was just a quick test and since I don't know anything about the whole openGL vertices triangles thing I have to play around ;)
Yes I see what you mean with giving points that would close and create a shape. Thinking almost vector design here. Maybe also linked to Feature Request SVG & PDF import
For the "Requested Frame" going into Curve, Math (time ports) you can simply use the "Time" published port from the protocol mode !
I guess in protocol mode the "Fire at Display Refresh" would work too.
There are some specifications yes to protocol modes. For mouse interaction for example, see feature request and comments below at "Pointer Interaction" protocol. I guess it's the same for keyboard inputs.
I have no other specific example in mind, ask here if you need more help ;)
Using Parabox's Get Mesh Values node along with Smokris Reinterpret 3D object I tried to make a graph like thing. But it is pretty hard since you have to retrieve specific vertices, then merging lists again etc.
PS : remember if you want faster implementation, you can always ask the team for a price estimation for a request and hire them : https://vuo.org/paid-support