1) Player customization will consume you
The player customization system isn't based on classes and doesn't require you to adhere to any pre-set superpowers. In other words, if you wanted to a be a gadget-using, fire-and-ice based golem or a scantily-clad dark magic cowgirl elf, you could make it happen—and no armor pick-ups or costume limitations would mar your mental image of what your hero is supposed to look like. There are default superpower sets you can choose from and a randomization option for body type and costume that let you get your character going that much quicker. Even better, you can lock certain options while clicking random so that you can keep a color scheme you like but try different body types, etc. And if you decided you liked one but clicked "Random" too soon, you can click "Undo" and go back to it.
This will probably occupy my first three and a half hours of gameplay.
2) Yes, there is PvP
3) The Nemesis System is like the Buddy System, only evil
4) It may be action-flavored, but it's still MMO combat
5) There are no limitations besides the level
