1. Good point, Valerian was non-violent. He was only interested in knowledge not warfare.
2. In all the books I read, Xel'Naga technology was superior x1000. Why give up any of it if you don't fully understand its potential? Could we say that since Amon was a Xel'Naga...that this tech really belonged to his "race?"
3. Nova and the terrans can't be finished...they have to fight for Kerrigan now.
4. I remember that part but my point is that until Zeratul came, Kerrigan had no clue about the zerg origins. How can you "lead" a race without some knowledge of their history and where your going?
Maybe some of this will be cleared up in the final series...