Biotics are pointless other than for Biosplosions, those deal so much more damage than any single biotic can.
Well, maybe there are a couple of exceptions, like Lash which kills singular enemies well if used correctly.
Lash is my favorite power in this game, it's so fun to pull unarmored enemies all over the place, especially those damn Phantoms. It can be pretty useful in higher difficulties. Sure it doesn't do a lot of damage, but incapaciting a couple of enemies one after the other is nice.