Hey, I have some quests in Fury in my ranger solos thread ( at least DA before u 21 is there, but only screenshots ).
Don't see a way to do Breaking the ranks without extensive patience and cheesy safe spots.
But I could give Tor a try ( with screenshot " coverage ") in Fury I guess. It's gonna be major pita though
I agree with your point though, about Blitz. And I don't think hardest quests in game should be soloed either.