Fullbright players
Should we allow enabling fullbright players client side?
This setting in Nexuiz (and maybe earlier Xonotic versions?) was controlled by the server with g_fullbrightplayers and was applied to all players connected to the server. This cvar still exists but doesn't work at all (just like g_fullbrightitems).
EDIT: sorry, I was wrong, g_fullbrightplayers works. However it doesn't work on the fly if you turn it on, in this case you have to respawn to actually apply the effect.
Players can gain an advantage by enabling it, however players can already improve player visibility a lot by using megaerebus which is 90% glowing color and included in Xonotic or some user-made player models with badly tweaked textures and shaders like the modified version of ignis posted in this forum thread which turns the "shirt" color into another glowing color.
The abuse of glowing colors flatten player models, as they ignore ambient lights unlike fullbright which at least simulates a static light and looks a bit more natural.