Actually it is my belief that a little crap in a list site is a good thing. Kind of the way a little piss on a webmaster board can be a good thing.
The trouble is my admin seems like it has a direct connection to a collage dorm's main waste pipe during a Saturday’s evening of heavy partying. Each day I find myself swimming upstream in a sea of crap.
If I get a nicely designed site with good content I may overlook other things but if it is four pages of thrown together ads with pics that are just so so then I'm much more likely to nit pick about some rule and hit decline.
I can't tell you how many time I see a site with gaudy design and/or awful colors I just look for a reason to decline.
Likewise I see a site with pleasing design and decent content and it is more like please don't let there be a problem that prevents me from listing it.
It comes down to the fact that there is way more stuff being built then is needed so only the better stuff is going to get listed.
Want good listing then build good stuff.