There is no "appeal". They just go after all the washed-up, old school metal acts, because they know that nobody else does. It's basically a has beens label.
Not that I don't love Halford and Anthrax to this day, but the new Maiden's horrible, and KISS hasn't done anything decent since Carnival of Souls. Megadeth put out on album on Sanctuary, and it was HORRIBLE. The piece of shit didn't sell, and then they broke up.
Biohazard, was never cool, and Lynyrd Skynyrd were always a second-rate southern rock band, known for two songs (and they haven't been relevant in about twenty-five years). After the disaster that was the last two Megadeth albums, I'm SURE everyone's waiting for the new Dave Mustaine solo project!
So who's that leave us with? Maiden? Brave New World was damned good, but it doesn't measure up to any of the first seven albums. The new one bores the shit out of me, and it looks like they have the same problem that was there when Bruce left: Harris is trying to write everything, and they're getting really fucking repetative.
Bottom line, is that Infernal Combustion had it right again: "Every band on Sanctuary secretly feels sorry for every other band on Sanctuary."
Sanctuary has the only big names left? So the only good metal bands are the ones you grew up with? How about a little symbolism for ya?
Q: How many metalheads does it take to change a lightbulb?
A: All of them. One to screw it in, and the rest to bitch about how much better the old one lit the room.