If people want to create threads, to advocate one band or another, I see no harm. Glenn has already commented that such threads will have no bearing on who he picks. But if people are having fun with it, so be it.
I seriously doubt Eidolon would appear at a PP any time soon. They were at last year's BW & BK festival. Glenn typically likes to bring bands to PP that people haven't seen before. Additionally, I doubt he'd be high on the idea of bringing a band to PP that played last year's competing festival.
As for Eidolon, I saw them at the aforementioned BW&BK and thought enough of them to buy "Coma Nation". That being said, I haven't played the disc very often. I find their music kind of dull. 90% of it moves at a single pace and the songs tend to run together. The fact that the singer is fairly monotone, doesn't help to give the songs much seperation from one another. I've heard the new CD as well, and the song quality isn't really any stronger. If you liked "Coma Nation", you'll probably like it. However, if "Coma Nation" didn't rock your world, don't expect to be blown away by the new one.
As for blowing the roof off of Earthinl Live... unlikely. They are a fairly low energy band onstage.
GZ