Machete was fun. Not great, but fun. When I heard about Gaga being in it, I just went, "Pfft... media attention casting. Screw you Robert." Then I heard about Vanessa Hudgens joining the cast, and went, "YAY, thank you Robert!"
Worst part about Machete was Jessica Alba. Okay, she's hot, but that is ALL. She can't act her way out of a wet paper bag. Biggest joke, was she was supposed to be playing twins, but was SO horrible at it, Robert had to recut the flick, and make her characters into one. Girl is a train wreck.
That said, Machete Kills should be a fun flick, and yes, PT should also have a sequel. I guess that will come after Sin City 2 & 3 and the Spy Kids re-boot.