Muahahaa. I have a thing for trio/threesome fics. :D There are some really good trio fics out there - so, hey, why not Luna/Ron/Hermione? Luna and Hermione are very interesting characters - they're similar in some ways and different in others.

It'd be fun - unfortunately the fandom is too full of shippers who hate each other for it to ever take off. My little fantasy ship ...heh ...