And they were probably the only ones worth reading, but that Mxyzptlk cover is worth a snigger.
Focussing on a villain (Deadpool and the Punisher qualify.) fouls up whatever moral compass you're you're supposed to be working with (Howard the Duck in a pinch) and should deliver unpredictable story telling.
Making the Trickster the STAR of Underworld Unleashed was genius.
Then of course Amazing Spider-Man right now is all about a villain being in driving seat, and he's really become caught up in the hero game... Although, if he was truly evil, Otto should have put a ring on Mary-Jane's finger.