What if that what if this…
You say it can put one of the players at disadvantage, ok.
Then tell me, what does game, then u press big green button fight?
It pairs you with another player with similar rank to fight, at the same time you dont know what your gonna face, heat/energy or phys build as your opponent, am i right?
You want to talk about balance?
I am phys, i dont have annihilation, as you said, and then i am paired with energy build, they just wreck me.
If your point apply to the game RN, then i press FIGHT my opponet should have everything (or close) same as me, then its a balanced fight.
So the answer is make it random just like matchmaker.