PAC3
PAC3 is allowed for outfits, not for cheating: the costume vanishes in combat.
What it is for here
PAC3 lets you wear a costume, wings, a hat. On Elipcee you can dress how you want — as long as it does not give a combat advantage.
What happens in PvP
As soon as you shoot or take damage, a 20-second countdown starts. During that time PAC3 is removed: no inflated hitbox, no tiny model, no offset vision.
In Build, PAC3 stays. The costume is never armor.
What is still forbidden
No full-screen parts, no absurd scale to block a path or hide a player. A report (Tab → Report) is enough if someone abuses it.