Nu metal was terrible in general but as you mentioned, SOAD were excellent and Daron Malakian is still releasing music which is like modern SOAD and is excellent. Deftones were another very good nu-metal survivor although I don't see anything they made after White Pony as being nu-metal. Not all nu-metal was as bad as Crazy Town or Trapt. Even Limp Bizkit made one acceptable album (their first).
Same in Britpop. There's some very good bands still going from that scene. Suede, Supergrass, Charletons and Placebo were all britpop, all still going and all excellent.
We are overdue a big new revolution in music but I'm not sure it'll happen now that music scenes don't really exist anymore. There's no more metal clubs, no one goes to night clubs, even raves are just a handful of hippies with some pills playing early 90's music