@Jerkchicken You're simply looking too far out at something that might not even happen.
I was actually deliberating putting down like very specifics in quantifying the tiers within the system, like listing weight capacities and top speeds, but quickly opted out of it. The reason being, because I simply didn't see the fun in it. Myself or any of my players. The tier names themselves aren't even thought out more than a minute. I figured we haven't even gotten to that part yet, so why bother. There just isn't a need to bombard people with so much extraneous information when it isn't really relevant at this point. There is a progression, and that's all that matters. We're here to fight EPIC things, and we need a quantifier for HOW we do it. A guideline for action scenes. That is all the stats are meant to serve. Things might reach a point where two 'Elder Gods' clash and destroy whole universes, sending the cosmos into a supernova of oblivion. And it might not.
Once we get there, if we get there, we'll jump over the hurdles together.
Right now, you are either average human or you are quite frail. That is all you need to worry about. Average does not mean pulling random people on the street either. That is not how you calculate averages. It is the AVERAGE of a certain context or data, in this case being the human race. Which, I know, is still quite vague. But now we're just walking on semantics.
I'm sure if something weird comes up in the RP we can talk it over.