And that too, yes.
My solution to such situations would be to take the three-member Fire team (Balinda, Geddon and Ragnaros) and farm an easier, but meaningful heroic bounty (something like Attumen, for example) while carrying three others. A compromise between efficiency, completing tasks and reasonable gameplay.
One thing to keep in mind is that the tasks are not going anywhere, so there’s no dire need to precrastinate (sic) and try to get them out of the picture a.s.a.p., even at the cost of sinking so low as resorting to the infamous quilboar.
Sometimes, though, you would still go to the Barrens — that’s where true Mercenary heroes are forged, I suppose — to ‘practise’ those skills on opponents in lower-lever bounties and such.
Is it the second one? The previous big one was that they’re available in chains… and before that was the Mysterious Stranger nerf.
Well, for newer players that could be very convenient: you start with Cariel, Xyrella and Samuro and progress with their tasks at the same time.