This is on the list, and relatively easy to do. It could easily make 3.0, and if it doesn't it could occur shortly after in an interim release, which I do frequently without any notice when adding minor features or fixing minor bugs.
I vaguely recall (as in, I'm probably wrong) that you (Percy) had plans to set up the signatures such that when the signature changes, it also changes on all the old messages, like the avatars do. I personally would not like that system - I would like the old signatures preserved as they were when the message was originally posted.
I've was persuaded around to your way of thinking the last time we talked about this, particularly as it's not unusual for people to refer to their signature in the body of their message, and changing the signature could make the message unclear or even nonsensical.
It would also add a run-time performance hit.
The only place where I think it might be helpful would be in the moderator signatures that contain all the useful links, which change from time to time, but that would be only a minor help.
So there are no plans to update signatures in old messages when members change the signature in their profile.
Actually, I'm struggling with how best to do this right now. I'd like to create a drag and drop capability, where you might position the cursor over the "Message 65 of 71" text of the message, hold down the left mouse button, then drag over to the text box and release the mouse button at the point in the text where you wanted the message link, and it would drop into the text "[msgid=184572]".
I'm not sure how to do this yet.
I'd also need the equivalent for forums and threads, and since the text for forums and threads are already links, you can't left click and drag, because it drags the link. I could override that and cause it to drag the text, but then they wouldn't be links anymore. So I'll need some other forum-related/thread-related icon or text for people to drag and drop from. Assuming I figure out how to do drag and drop.
Drag and drop within the same browser window isn't the problem. It's doing it from one browser window to an adjacent browser window.
Right-click then selecting "copy" from the menu would also have to work.
Some of us haven't bothered with it because it puts the link in a premade format. I usually prefer to embed links to messages in the text I'm writing. The dBCode doesn't let me do this.
But I'm talking about people that are not familiar with making links and ways to make it more user friendly. You could add a first option (I thought of this just after posting the above) that would make an html link (that could also be used off-site):
Right, what you want is for something like this to be legal:
Not difficult at all, except that [msg] is one of the "lone" dBCodes, meaning that it doesn't need a closing tag, and I was intending the new [msgid] code to be the same style. I'd rather not introduce yet another dBCode that accepts a closing tag but is similar in all other respects, but maybe a simple and intuitive approach will suggest itself as I work through the other related issues.