If they change too much they can't call it destiny. They made great improvements to a great game while having it still look and feel like destiny gameplay. I don't know why people wanted them to get rid of strikes and raids but those are what make destiny destiny. In theory they got rid of the bad stuff like patrols and replaced it with everything that they cooked up for D2. Strikes and raids werent bad or broken so theyre stay and are likely being greatly improved. We still have a lot to see so hopefully there will be more different subclasses and such.