1. "Too aggressive" relative to what? There's probably never going to be an absolutely perfect, peaceful human being, simply due to our evolutionary roots. To suggest that this means we should abandon the peace prize is absurd. There's never going to be some perfect embodiment of peace, but that's not what the peace prize is for.
2. http://www.icanw.org/pledge/ If this list is "bottom-of-the-barrel-scraping" then please, scrape more of the "bottom of the barrel". Would we rather reward someone for managing 100+ nations to sign a treaty like this, or reward someone who posts indignant and borderline self-righteous rants in an internet blog? Again this is a throwback to the above point of relativity.
Bonus point: The Dalai Lama, Desmond Tutu, and Mother Teresa aren't good indicators that this prize has a purpose?
Edit: Added Desmond Tutu above because I'm a big fan