I admit it's a problem, but I have no practical solution. I bet I know Bungie's solution though! "Form a fire team with your "friends" and agree that you do all the shooting, while they just hang around and revive you now and again." Mind you, if you all take turns, it will still involve thirty strikes! Whether it's quicker or not, I decline to opine. (I actually recall doing something like that in Crucible years ago. Take turns shooting each other. Took a bit of bother to set up as I remember, but it worked. Of course it was a scam, but Bungie doesn't mind scams if it involves friends.)

This is a major problem a lot of ppl in the community have been complaining about - but Bungie feels emboldened to piss us off even more so they add more of these types of bounties and quests.

Start a 1250 nightfall solo, play through it slowly until you find a champion that's close to a checkpoint. Kill it, wipe, repeat. If that's not possible due to placement of Champions, just kill the first one, orbit, and load back in. Shouldn't take too long to do that 10 times.