Kennedy Richard maintains OSSIn Nodezator's dev branch: changed the magnetic sockets feature to make it closer to what I envisioned originally: the nodes had hands and would help you by grabbing the new connection for you.
The hands are CC0 assets from the excellent
@kenneynl
No guys, hear me out, we might be onto something here! What about tracking eyes that become happy when the connection is reached out? (also in Nodezator's dev branch)
Okay, you asked, and now there's a hand near the mouse to meet the one on the nearby socket as well. Thank you all for the suggestions so far. (already on Nodezator's dev branch as well). #Python #nodeeditor
In case you didn't know, Nodezator is a generalist Python node editor. Open-source proudly dedicated to the public domain. It is a serious project but still has a long way to go (it is quite useable already though).
https://github.com/IndiePython/nodezator
https://github.com/IndiePython/nodezator
troy_s 
@KennedyRichard This is terrific stuff.
Have you given any thought to the ergonomics of the node inputs and outputs?
@troy_s Thank you for kind words.
Regarding ergonomics, I'm not familiar with the applications of the field to the usage of the sockets. I created this feature based on my frustration with sockets, cause I didn't want to make them big (it would take precious space from the node), but also didn't want to leave them small cause it makes it difficult to swiftly drop a new connection over them in one go.
That's when my silly mind imagined a tiny hand grabbing the connection for me.
@troy_s Ideally, I'd have all of this tested manually by other people.
Thankfully, I can at least count on user feedback. (it is not the case here, but pre-releases also help with this kind of thing, since you can test with a small userbase before pushing as a final release).