Classes you would like to see.

Thankfully, you can describe some "magic" effects as science. People already have massive guns, weapons that heal, stealth fields, etc., so tech can be the answer.

On the other hand, I think most biotic abilities that can fit the game are in use.

I think IF, emphasis on the IF they EVER make ONE SINGLE new class it will be something along these lines; it's normal weapons aren't very powerful but it's XYB skills serve as it's primary damage and such. But even that I don't see as very likely. I'd rather them add more complexity and options with the classes already available.