First I'd like to point out that the whole fate/destiny point usage is needlessly confusing. Why not treat it like racial points and only use the point reward on the third, then give the other hp/mp thing behind the scenes to avoid confusion.
That aside, I like the concept of the new EDs, but hate the execution.
The whole charge/discharge thing is a boring micromanagement system. Since the charges have a time limit, you really can't save them up to do something cool when needed, you have to waste them on some trash mob or do nothing and lose them anyway. And on that note, the things you can do with the charges are pretty lackluster.
Epic moments are gone and the destinies might as well be another heroic enhancement line. Nothing really defines them anymore and they all just blend together into a blah mess of blandness.