Else I would have moved it earlier.....!
When you're a mod yerssot, THEN you can make that determination.
Anyway, As to the relationship between QGJ abd Dooku, it is all supposition right now as far as movies go.
We don't even know if QGJ will be seen in a small Episode-II appearance, despite some indications that we may.
To me, it's better now knowing where Qui-Gon came from. It makes it much more mysterious. We don't know anything about the guy, just that he was well respected by the Council, master of the legendary Obi-wan, and he was a rebel.
We don't know how he got there, but we saw him die at the hand of Maul. So he was the first Jedi killed in the entire thing; which doesn't end until the student he found to save everyone dies.