I'm usually a bit squicked by a/o in general, but a good writer can sell me completely.

Just that most of them are writing Torrid Romance of Destiny (Male Flavor). IMNSHO, a/o gets a ton of fic that just puts the omega in the girl role (mpreg too), and never goes beyond the most trite cliches. But the same goes for most stuff, 90% of everything is crap...