PVP - Name plate - Affiliation

I'd hope we can't. Your reputation should mean a lot so you shouldn't circumvent that by hiding your name/affiliations in different situations.

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It's a double-edged sword. On one side we have potential spyish gameplay and fun rp stuff, while on the other side we have potential PKers wearing shitty clothes coming close to a casual player to kill them while seeing the attacker's name might've indicated to the casual player that they should either prepare to fight or to just run immediately.

There's also all the interactions with node/guild wars members and "kill on sight" guild orders for other guild's members and other similar stuff, where hiding your name would either give you a huge advantage or just add disruption to the intended gameplay.

Now you could have different limitations on the system and enable its use only in particular situations, but then we gotta have a discussion of "how much should a super limited mechanic get developed, if at all". I could maybe see this kind of thing get implemented in a later expansion to spice up the somewhat stale regular gameplay, but not on release.