Hey Bungie,
I don't know what the player engagment numbers are for Rite of the Nine, but from this potato Destiny 2 player's heart, I thank you.
I don't know if you will ever have Explorer mode in future content, but I've had a great time in dungeons that I wouldn't have otherwise done. The experience has been the loot.
That is all.
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Explorer mode or something like it should have been in the game a long,long time ago. When I new activity is introduced, you have at most a week or two when people are willing to just jump in. After that, it's "Know What To Do".