Mhmm... I don't think there is a need, as long as the player says like 'hacker' the mod could just find out and record. If not, follow Muse's suggestion. 'Allow all players to see nametags' Thanks
Support! But also maybe once in a while refresh the zombie skins cause some times humans are zombies and zombies look like humans.
If its a plugin/1.8 issue, they could have Zombies wear unique Zombie Heads on-top of the Zombie skin that have your player tag on them. Simple fix that might work.
No support. Mods will not be able to see the name tags in reported videos because it is from the view of a player who cannot see name tags.