I would have no problem if they added an untimed option for greatly reduced rewards ... like an untimed +10 being the same rewards as a timed +5. Would not bother me a bit and I don't see what it would hurt, but i would never do it. I can already push what's beyond my timed comfort as an untimed run (i.e., we can ignore the timer.) I remember doing a 20 in Legion that took like 3 hours LOL.