So after playing all evening on my night blade yesterday I can definitely say that ultimate generation is far too slow. There needs to be some sort of modifier where it goes up faster if you are hitting multiple mobs. That's the only time I really care about my ultimate, to save my ass when I'm fighting a pack of mobs and it starts to go south. Usually I use VoB for this. With this new system it felt like my ultimate was almost never up and I actually gave up using it because switching weapons is still so cumbersome and more often than not I would switch to find it less than half charged. Honestly the old ultimate system was great and this new one has ruined my play style. Very disappointed, and I hate to think how difficult the veteran dungeons must be now with no reliable means to generate ultimate during hard fights like praxin.
Awful change, badly thought out. Please don't let it go live in this horrible state.