Having code autocolourized and linkified would be neat indeed. Consider though that Perl source is hard to parse; to do this properly would require something of the complexity of Perltidy. Also take into account that nodes are rendered at view time, not at creation time. So if you've ever run Perltidy against a moderately large piece of code you'll know why I don't see it being feasible to implement here - it would be a really heavy CPU eater on the webservers, worse than any other performance killer on the site.

Makeshifts last the longest.