Yeah I just had a look again. I thought they were combining the effects of waltz and Cure Potency received to one effect. After re-reading it I realized its staying separate.

But they are changing the cap so that cure potency caps at 50% and Cure potency received is on a separate cap of 30%. So it makes Healer's roll less useless since most people can't cap cure potency received. Its just a shame that it likely has to be rolled on the people being cured rather than the mage doing the casting.