They didn't.
DK's had to be completely changed after release since they couldn't get the 3 DPS/3Tank specs working. They had to completely change and remove resurrecting allies into Ghouls too. DKs were very experimental amd rough around the edges, not enough time to cook.
Monks had to be completely gutted with their original 'No Auto attack' design where they only had active attacks in melee and Blizzard couldn't get it to work ata all and cut the entire feature to make them more homogenized. Monk also missed abilities like Earth Storm and Fire that had to be patched in after release.