No... not a solution for me i think

wnen i have both CB and CF on cd it will be like 33% cahnce to cast inci... so i will miss 2 out of 3 presses as macro will attempt to cast spells on CD(ie i will not cast at all). Assuming i mash button 4 times a second i will lose 0.5 second of casting time each cast... HUGE DPS loss

that if i understand the mechanic of the "castrandom" correctly though