The magic links are awesome.
How much more awesome would it be to be able to make a comment linking to one of the URLs covered by a magic link, but with custom text?
Since the square-bracket link type isn't included in the mini-markdown used for comments, it could be stolen for this purpose.
Comment text like
Please [add that information][edit] to the body of your post rather than using comments.
or
Please [include the shortest possible amount of code that demonstrates the problem you see][mcve].
would convert to
Please [add that information](http://{SITE}.stackexchange.com/posts/{ID}/edit) to the body of your post rather than using comments.
and
Please [include the shortest possible amount of code that demonstrates the problem you see](http://stackoverflow.com/help/mcve).
for example.