I don't believe that Kubo is really trying to end Bleach. If he was, he would've wrapped things up.
Say what you will about DBZ, every time he tried to end the series, it had a good ending.
Ending 1 - Goku gets married, and starts a (relatively) normal life.
Ending 2 - Goku becomes a Super Sayain, and dies fighting the most powerful force in the universe.
Ending 3 - Gohan surpasses his father, and saves the world on his own.
Ending 4 - Vegeta and Goku stop hating eachother, Gohan has a kid, and Goku takes an apprentice.
Ending 5 - Go to hell GT