It's been funny but enough is enough

[Zebraoracle]

1 - There are better tab targetting systems in other games. Some even made by SE (Kingdom Hearts'). Maybe start there.
2 - Cone priority completely goes out the window if the opponent strafes to the side, out of the cone. From personal experience playing cone tab targetting, it's not much better. Better for dungeons, maybe, still not the best for PvP whatsoever.
3 - Given how you've basically been denying the problem and shutting down feedback about it whenever people point out stuff at you, I very much doubt whatever solution I present will so much as even be considered. It'd be absolutely futile.

You gotta remember, they use a MACRO to avoid the targeting system entirely, so to them the problem doesn't exist because it doesn't exist in their bubble.