What does Excal have to do with anything, and many vets have been saying this for half a decade.
I'm calling bs on running the new boss in under a minute. No boss with invlun phases is that quick, and even most others take longer through sheer length of mission. The above results screen is from roughly an hour and a half to two hours, between matchmaking, getting to and from location, and myself and pubs learning the fight.
You also say that like a token system would be inherently badly balanced. You picked 15 runs with no chance of getting it sooner. Why not 5? Why not be able to trade back pieces for 1/3 of the tokens to get a new piece? Or 1/2? Then you get the best of the current system, where some people get frames in 3 (4 for wisp) runs, but there would be an upper cap no matter how unlucky you were.