Hello,
As title says, 16 player activity can happen. You could see recently there is/was a bug that 16 players joined The Glassway strike at once. So 16 player activity is actual possibility. My idea is that Bungie shouldn't fix the bug entirely, but instead use it and make actual end game activity which you can grind. 16-man something what could have the most insane difficulty you can imagine (gameplay-wise and mechanics-wise). I think players could actually appreciate it since Menagerie or something similar isn't in game anymore. Don't get me wrong. I don't mean something like World of Warcraft raid style or something, but something that could be fun and could be end-game at the same time. We, as players, need something difficult. Even casual players are getting bored with the game. Raids nowdays are insanely easy.
With regards,
Trago
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Maybe 6, not 16.