I don’t know anything about something like dev community. But I know, personally and professionally way, a lot of coders. And any of those guys don’t need that. And baceuse they are coders they can code a tool they need.
What I mean this should be quite piece of cake for coders and is defenetly worth of plugin or component if such — again, from my point of view — ancient-style tool is needed.
But as webmaster/sysmaster putting something like this in core is just unnecessary bloating.
Well, this is just opinion from a user and I have nothing to do with dev of Discourse.