That's SCH problem.
Some people complain "oh noes, conflicting ressource, that's why SCH is broken"
Then people propose a solution (make ED a standalone ability and/or single AF gain + another AF dump that's less useless that overheal in this case)
Then it's another crowd that complain that whatever you do that isn't damage is useless as AF dump.
And it's the same the other way around when people want more damage or dots back.
You can't please anyone, so SCH is stuck as a mess.