Lots of replies. Yay!
That was kinda my thought though. That we exclude a lot and end up with just a few works which we deemed the most generally accessible aro content. This doesn't mean they will be the best aro content, likely most people will have other favorites that they prefer. We could also do it like @Apathetic Echidna suggested and kinda just rate things based on the aro rating system. The thing is, I don't have anywhere to put an extensive list of aro content so I wouldn't really know what to do with such a list.
Or like the friend of @The Angel of Eternity suggested, to have two categories. Maybe one could be with sex and one without. It wouldn't have to be categories as ace and allo either really, since not all ace are sex repulsed.
Maybe more useful criteria could be: globally accessible, and light on obscure cultural references.
I agree with it's flaws (and also the aspect of taking it out of it's original context)
Maybe a better metric would be at least one woman with a distinct speaking role?