Can I edit the powers of my soldier class? Add powers from Adept class and remove my basic ammo abilities? Can I do it by editing Coalesced.bin? What I must to do?
You can use gibbed mass effect save editor and go in raw->player->power->collection and edit to your heart's content.
Take note however that you CAN'T remove default powers and in order to keep non bonus powers you have to type:
Set SFXPowerCustomActionBase IsBonusPower true
in the console every time you start up the game.
It's a pretty crappy work around but I haven't seen anything better yet. They should have added a custom class option to make things more interesting.
Yes, you can edit your Coalesced.bin. Just be careful not to go into multiplayer with an edited Coalesced. You risk getting a ban. Make a copy before you do any editing.
That's the only workaround I can find. You must re-enable them at game reloads and new mission starts.