Well, considering you shouldn't be doing it alone... this is good?

Doing it as a team with only group members gives increased reward. All the ranking do is giving people an ego boost. We have 0 people on the ranking with quite a few finished with it, because we prefer actual useful reward.

I did it with 2 others, all 3 of us ftp. Now, we lost a few times when we were unfamiliar with the mechanic. But by the end (4th to 7th run), we only have 0-2 death each run, usually 1 due to 3rd hokage (the delay on mystery is bad due to the chases and animations, we have an interrupt but only managed to interrupt him twice out of the 7 successful runs)

So it's fine. If the ptw want a ego trip, let them. But for the average player, just do it in a team. It's not that hard.

(P.S. Gakido is REALLY good for this. Because they, especially minato, hurts you much more when you are tagged.)

Ever since the Group instance SA merge, SA reward structure have changed

1. If you do it in a team with only group members, you get an extra attempt with extra rewards.

2. For each group member in your team, each fight you get slightly more group tokens and group contribution.

Considering the update that merged the two is only a bit over a month old, I'm not entirely sure what is the scope of your "always"