warp, singularity, energy drain, neural shock, reave, seeker swarms (technically not brute force even though they're thrown out), tactical scan, stasis, hunter mode....
Also, brute force is a tried and tested way to kill ****, so it makes sense for them to gravitate towards it.
I know but that's not what I meant. Warp is totally brute force btw. 
All those powers are combat only. Intelligent use means finding ways using your powers to make everything easier/better, not just combat. If I can drain energy, why do I need to shut down the power grid? If I'm biotic, why do I have to solve a puzzle to get past a barred entrance instead of blasting it open or levitating the object I'm after to me?
Biotics can control mass/gravity with their mind and they don't use it for fun? For transportation? For reaching high shelves or lifting heavy crates?
This goes even further with actual superpowers. People have written a lot about finding better ways to use those than beating up criminals. A tech genius could revolutionize the world and get rich, too. You can teleport and bring people with you? People will pay outrageous sums for that. Your powers create energy out of nothing? Let me introduce you to someone working at a power plant...
Of course, biotics are very limited in their application compared to superpowers but you can't tell me there are no non-combat uses for them.