And triple click selects the entire wire (all branches). Anybody up for a quad click? Personally, not myself.
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I'll go on record as one of those R&D people who considers wire labels one of the most useless features we've ever wasted development effort on. That's my personal belief... obviously not shared by all of R&D or the feature wouldn't have gotten made. But I have absolutely no use for them. Attached comments work soooooooo much better.
I agree with AQ that wire labels are not that useful and I typically don't use them.
Wires do have implicit "names", i.e. whatever indicator name we get when we "right-click...create indicator" on the wire or create a probe. (see also this comment in a related discussion).
For debugging and documentation purposes, it would sometimes be useful to be able change that wire "name" so the underlying math of the code is easier to understand, even without showing any labels. For example the output wire of a division is always named "x/y" but it could be useful to be able to re-name it as "normalized pressure" or whatever the code represents. Now a probe will have a useful name.
... Bbut that would probably be a different idea. 😉
Attached comments do not move with the wire (think diagram expansion or shrinking).
I think wire labels are much better than comments and I use them a lot.
This being said, a lot more time and effort would be needed to make wire labels what they should be doing (or not doing). Just do a search for "wire label" in the Idea Exchange...