Its sad to say that epi was an only reason necro was needed in a team and now you hard nerfed it. I'm saying this after I tried playing with new epidemic for some time and as a necro main for more then a year. Necro is wothless. It has lower CDPS (Mesmer has greater cdps + it offers much more to the team) and power DPS then some classes, it doesn't offer health and support unlike druid or auramancer do. Necro offers nothing that other classes cannot offer better.
I think it's rightfull to ask Anet to give necromancer something to be viable, Anet, you can even be bunch of uncreative losers and give it a lot of CDPS, it will make us, Necro mains a bit more needed.