tldr, and wary of bikeshedding, but a fool so i rush in: 1] currently in maint the awesome package org-mouse.el activates links in comments. RET does not. Perhaps this could be made more consistent or optional? 2] currently in maint links are not fontified in comments or footnote definitions. Perhaps they could be if they are active to avoid major surprises, or optionally for those who like me prefer [as a foolish bikeshedding user] to fontify them.
then again, i am the guy who insists on multiple paragraphs in inline footnote definitions, including for fontification if the fontification ever gets parserified. how crazy can you get?! btw, the nuclear power plant MUST be painted blue.
