Why doesn't pve have pvp combo structure?

[spf1200]

Because PvP is much more twitchy while PvE is slower and more deliberate. The PvP changes were made to help that aspect, but they aren't gonna give that concession for standard content. Nor should they, the classes are already simple enough.

Since no one has answered this question (it's almost like people are avoiding it) I'll ask you. Why is pressing 123 more complex than 111? You still have to weave your Ogcd skills and know when to use which skills. Why should one combo chain take up 3 buttons when it can easily be on a single button with no change to the way the class plays.