I dont think the 5 man heroics are going to get easier with nerfs. Just easier with time and as more raids come out and the valor gear becomes justice gear. Just like wrath and trying to run heroics in sub iLev200 blue/green gear vs iLev264 epics.

It will be nice to rep farm and justice farm those 3 non heroic places. Halls of Origination takes like an hour and a half on heroic right now. We will be more than ready for raids in full Justice and rep reward gear.