I was running two accounts simultaneously, two computers, keyboards, monitors, mouses.
I was doing dungeon instances as dueling them was twice as fast as doing solo.
My left hand was thief for skips/support and right hand was ranger for kiting/damage on bosses.
It was stupid thing to do but it was fun, and it is all about fun 🙂
I grinded all the tokens I needed so not doing dungeons anymore.
But there are uses other than daily login (that I do not do even on my main account).