Originally Posted by
Great Destiny Man
Haste corruptions don't give an infinite benefit. You stack it to a point then focus on other corruptions. Haste not only affects core rotations but also synergises with other corruptions/essences/what not.
Pure damage corruptions don't really lose power the more you stack, GW was the most problematic of the pure damage corruptions because it had rediculously high DPS per corruption point. Their choices were increase the corruption cost or nerf the damage, they chose the latter.
Also bear in mind pure damage corruptions have zero affect on your gameplay, it's completely all passive damage. Nerfing stat corruptions has a massive affect on how your class plays (and if you look at how they treated the planned ineffable truth nerfs, massively changing gameplay is not in their focus).