The energy/ mass mixture sum of the universe was present in the void BEFORE the big bang
This is utterly meaningless since nobody has any evidence of what was 'before' the big bang. Even if there was a 'before' the big bang (nobody has any evidence for there even being a before either) there isn't a scientist on the planet who can prove it so please stop spouting this stuff as if you understand it and as if it is a scientific fact, it is at best conjecture and hypothesis.
There is no 'void' that the universe expands into, I've told you this before. There isn't anything 'outside' the universe, the universe is everything.
This does NOT imply that more energy is created, as you wrote, it is already there, and becomes evident, seen in action, as the universe expands. The expansion of the universe does not dilute the energy sum of the universe.
So are you claiming that you have some deep insight as to why we don't need dark energy to make the maths work in our current understanding of the universe? If so I would think that professor Hawking would love to hear your thoughts on the subject.