Destined Matoranís bodies are capable of channelling toa power directly to their inner membranes. Something which other Matoran canít do.
What if a Matoran hasn't always been destined to be a Toa?
The second portion of this power is then converted into elemental energy and used to fill the space in the enlarged elemental energy membrane.
No need, elemental energy generates naturally.
Anyway, other than that first thing I mentioned, I suppose that this is pretty possible, though I do prefer some of the other theories out there about this. However, I suppose that they're all just different interpretations of the same thing in the end.
I thought every being had their destiny set as they were created? and on your second point, I said that so a new toa would have a full reserve immeadiately as Elemental Energy takes time to recharge.