Did you not play it in ME1? With Singularity, it was a monster class.
Imagine the sheer amount of awesome when you throw a Singularity on one end of the room, lift a bunch of enemies on the other end and unleash a Carnage into a group of them that are suspended in the air, then Throw a lifted enemy into the sky for an instant kill.
Sucked ass? Nope.
ME1 classes weren't really all that "special". You can be a beast with most of them, but when it comes to "fun", Adept and Vanguard are easily god tier in that game due to the control they had over the battlefield.
Biotics aren't as fun in this game. I'm struggling to level Adept because of it.