Wouldn't it be nice to have a self-defeat command in dungeon instances?

In GW2, there's this /gg command that works as a self-kill option, and it would be great if TL had something similar for dungeon instances:

If you need to reset a boss fight quickly, instead of waiting for the boss to kill everyone, a self-kill command would speed up the process.

Even better, if it also reset skill cooldowns, it would save a lot of time when you unlock the latest respawn spot and want to switch to a single-target build without waiting for cooldowns to expire. (Sometimes, if you wait 10 more seconds, some people start to complain, and they might even start the fight without you.)