Random invitations from Conclave (and others)

[-ViperStrike-]

Every now and then some random Tenno thinks it will be a good idea to click on somebody's else nick and invite to the arena. No chat first, no socialization, you're not even on the Tenno list yet he keeps calling you. It would be nice to have some sort of limitation to that, so some players can stop spamming you consecutively - only to get reported and blocked.

[Nykerios]

You can already go into Options and change it so only friends can send you invites.

[-ViperStrike-]

That can be a problem in other situations, a wider option for that would really be better. Here most are from Conclave it could be blocked specifically from there.