Game Mode Suggestion: Add a Spectator Mode

[Loggos]

Twitch.
YouTube.

They could add it or they could just point to those websites, which is how people currently spectate PvE.

But Youtube and Twitch are passive.

As far as I understand OP, Spectator Mode means that you can navigate your avatar freely within the fight.
You can also phantom-attack and get pseudo-debuffs and vuln stack that give you feedback whether you dodged/resolved a mechanic correctly or if you would have been hit.

It sounds more like a play-along mode where you can practice the fight invisibly with actual proggers.

I think a spectator mode sounds like a good idea. Even if you are unable to interact at all (no phantom-skills and pseudo-debuff) running around in the arena gives you a very different POV than watching a stream.

The only "worry" I'd have is that this might become another precondition/expectation for PF ("don't join if you've never spectated the fight/practised the fight in spectator mode" / "Hector's guide & spectator experience" or something).

Then again I really don't want to dismiss a potentially very interesting feature because of unfortunate PF rando behaviour.