Lets face it, we all have things we look for in our reading. Some like eye catching covers, some like the lead on the rear or inside cover. Some go for the author.
I like a good idea with an interesting premise. If you've got something I haven't seen before, but it tells me it might be fun to find out, I'll go for it. I am choosey, I don't read anything or everything or just whatever you put in front of me.
But, honestly, a really good set of boobs helps.
No, that isn't a jerk thing. Lets face it, the protagonist has to be attractive to me as a reader. I like attractive women. Now, that said, my definition of attractive is wide ranging from Myrna Loy to Dr. Stephanie on Big Bang Theory to the Detective on Person of Interest to the hot chick from The Blue Iguana. But, Robert Asprin's Phule series, while having a kaboom lady, it wasn't the lady that hooked me. Like I said, a great looking (at least in my imagination) lady is a hook for me, typical red-blooded american male that I am. But, boobs alone ain't gonna cut it.
So, along with a good looking, attractive female lead, there needs to be something about your story that makes me go "Hmm, I like this. I'll give it a try."
If all it has to offer is a retread of Tokien with warrior, mage, hot chick, and plug in the color character, I'll pass. You better bring it.
That's why I like Legion, it changes and updates. Don't give me the same old retread.
But, that's just me. How bout you?