Yeah, I never got my head around Nova but that sounds pretty cool. I think part of my problem is I started with a Drell Vanguard (with unlocks that seem to insist I should play that class) and his powers aren't so great, and when I did try my other Vanguard, I didn't have a very good team.
I was actually thinking we could attempt some sort of 'basic tips & tricks' thing for ME3 multiplayer for PXOD, since you guys seem to know a lot about the ins and outs. Plus, we have a fair few people trying out different classes. Thing is, I know the game has so many different builds. Today, I saw a Krogan soldier rocking a Widow sniper rifle and nothing else...and it actually worked rather well (probably thanks to my singularity too).