Removing the signature requirement was discussed in bug 53132.
I believe that aspect stalled, because of these concerns:
(In reply to Quiddity from comment 20)
> (In reply to comment 16)
> > My recommendation would be that we remove the requirement that a signature be
> > included before a mention notification is sent, as stated here:
> > [...]
>
> Regarding "remove the requirement that a signature be included before a
> mention notification is sent", which I'm generally in favour of...
>
> I just saw Bug 54639 ("Echo is not triggering notifications when a mention
> is made while reorganizing comments in the page") which makes me worry that
> (if the signature-requirement is taken away) mass notifications will be
> accidentally sent when threads are shuffled/split/merged or archived.
>
> Just worrying out-loud; I might have understood the details incorrectly.
and
(In reply to Bartosz Dziewoński from comment #21)
> Good point. Luckily I think we could easily avoid that issue by just
> counting the number of mentions for each user in the old and new wikitext
> and only sending a notification is the number increased.
and
(In reply to Wikifram@gmail.com (Account disabled) from comment #22)
> A) I would support the removal of the need to sign a comment before a "ping"
> works (I wasn't aware of this requirement, and thought that my "ping"
> remained unanswered until JdForrester nicely explained this to me)
>
> but...
>
> B) I have the habit to archive my talk page by using "copy-paste", I
> wouldn't want people to get unwanted notifications when I do this though.
>
> I fear that A and B are mutually exclusive requirements...
Copying here, for easier access, and further/later investigation.
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**Version**: unspecified
**Severity**: normal