From the Release Notes:

"Healing Amplification has been changed to be additive rather than multiplicative, in a way that benefits many players while minimizing the detrimental effects to players who have created characters with a very large amount of Healing Amplification. In addition to making Healing Amplifications additive, many sources of Healing Amplification have had their benefit doubled. Healing Amplification is now a rating, similar to Melee Power, Ranged Power, and Spell Power, in that it increases all healing by (100 + Rating)/100. Repair Amplification works the same, as well as values that allow Pale Masters to heal with Negative Energy healing."

I am not getting what is meant here. What are the detrimental effects refered to in this quote that they feel they are minimizing?