The feature is Blizzard's answer to crowded quest mobs: easier regrouping, tagging unchanged.
- Greenfield's example: after you group with someone, you see that person the next day in another zone with a different colored name.
- That makes a second invite slightly easier. It gives no credit for a mob someone else tagged.
- Shared tagging is still not the fix. Greenfield said the friction stays on purpose.
- It is separate from the character friends list, which is still disabled in the beta because of a bug.
Unconfirmed how long someone stays a recent ally, and what the name color means.
Source Josh Greenfield, quoted by Icy Veins, 21 Sep 2026.