I have this too. Somehow it doesn't feel fun or powerful.
Personally I blame the lack of class definition for this. In the set up of ME:A you can be all classes and switch around between them freely. That may sound nice but at the same time it means that there need to be some limitations set (like only getting 3 active skills) and a balancing of powers.
It seems that the combination of combat and tech is master here. You can bring lots of weapons and have a sniper set up as part of that and I only used biotic on one playthrough when I played a charge in and blast them basically. But also that gets a bit boring just like sniping. I know, you can swap around but I just don't like that concept very much. Being a biotic is actually a big deal or it used to be. This swapping profiles business just makes it all feel a bit cheap and meaningless to me. So I don't focus on the combat so much in this game.
