I'm not sure how anyone would have blood issues as Assault. My only gripe is that a full bloodbank can reset back to half if out of combat too long (would prefer if it only reset OOC when you had less than half), but this simply means you need to make time for Feast between pulls (assuming you're in a group setting where you are not the boss of pulls -- in solo content, you would be running from pull to pull non-stop unless desperate).
Also don't get why so many people call the AoE weak. Yes, old VI cost next to nothing, did more damage and could spread endlessly - now I just use it if RoP happens to be on CD - otherwise I'm mass pulling, slapping RoP on them and just lashing out endless free Howls & Vamps left & right thanks to constant procs. Don't even use my trusty old Cadaver anymore, which would provide more AoE and would be buffed per Volatile infection along the way if you had it.
Since the latest GS rework I've been slapped down from 74k to 65k'ish. It provided us with a talent reset but my build is still the same since last mini-season, so I hit the highest distortion I could on patch day to see how my old gear was holding up and, shock horror, they were just as easy as last time. No breaks, just run from A to B with no blood concerns except maybe on Hobba (seeing as you kinda have to burst the adds down and have relatively long wait on RoPa & RoPl during that rotation) but he's only one of the few pulls/bosses of where such a concern applies.
Raid/Group wise would be much the same, assuming your group is pushing with minimal stops.
Again, unsure how much of this is relevant to your chosen content type - just saying I haven't really noticed any of the problems (if any) myself.
Regards,
Mhul