I feel like sales commission plans can take a surprising amount of time to really damage a company. Yes, you want to weed out the weak performers. But in SaaS, it's too easy to reward sales when they're actually disrupting product strategies and making everyone else's work harder.

I don't entirely recommend this book, because I feel that its arguments are not as well supported as they should be, but it is at least an interesting scan: http://www.goodreads.com/book/show/541132.Punished_by_Reward...