I've browsed through the players questions and found these ones:

1. Questions about issues with problem-players
2. Questions about social aspects of role-playing games or group-dynamics
3. Question about absent-players
4. Questions about a random TRPG problem, in which players are involved somehow

There are more descriptive tags for types 1-3 questions, and type 4 is basically the majority of questions on RPG.SE. Do we really need the players tag?