I firmly believe that ultimates should just use the higher of the two penetration values regardless of the ultimate's damage type. For those that don't know: physical ults scale off physical pen and magical ults scale off of spell pen. Meaning all else being equal, you dawnbeaker will hit harder on a stam sorc vs mag sorc, and your incap strike will hit harder on a stamNB vs a magNB. Having this be no longer be the case would really help classes that have lackluster options for burst ultimate and rely on an ultimate of the wong damage type. Really though, this issue would matter a lot less if every class had an effective low cost burst ultimate with the appropriate damage type on each mag/stam spec.