So, maybe it's just me, but I still can't see why your theory is supposed to make sense.
When Trunks jumps to the past the first time he creates a new timeline, but he doesn't on his next jump. Then Cell travels to the same timeline and
does make a new timeline. What was different between Trunks' first jump, Cell's jump, and Trunks' second jump?
Then when Trunks (the one that appears in the third timeline) goes back to the future the second time (because, obviously, he's absorbed the first time) he creates a new timeline - but wouldn't that timeline include his previous jumps to timeline two? Just like in timeline three, these events must be duplicated as well, so what happens when this Trunks jumps to 764 and 767, along with the first Trunks, to timeline two? Or do these new jumps go to a different timeline?
Beyond that, it's more just your whole theory of timetravel: the "sometimes create a new timeline / sometimes change history" is obviously inconsistent. Moreso, where does this idea about a new timeline including "everything up until the point int time that you left" come from? And how is it even relevant? Further, there's this "Trunks gets absorbed or ceases to exist" event that boggles the hell out of me. Where does this idea come from? I'm not saying it's not a fine time travel theory, I'm just wondering why you're including so many new theories into this. All we know about this fictional reality's timetravel is that new timelines are created because you can't change your own history, and that timejumps seem to always go to the last visited timeline. My theory doesn't import anything new, it uses
just those two facts and tries to explain everything without "making shit up", which is essentially what you're doing with these new ideas about how timetravel works.
And why is everyone so hopped up on using only four timelines? It can't be because of the daizenshuu, because
those four timelines call for a timeline where
Cell kills Trunks, where
Trunks kills Cell, the
main storyline we see, and a fourth timeline where
Trunks is absent from the Cell games.
And noone meets all those requirements. Well, noone, except
me.
