So I recently resigned after becoming a bit fed up in my current position and deciding now's the time to go in to IT contracting. My team recently got a new boss (which incidentally was nothing to do with my leaving) and I'm wondering whether I should tell her what I really think is wrong with the way our department is working. She knows my reasons for leaving (mainly I've out-grown the place) as I believe in being open and honest but I'm wondering how open and honest I should be. Because she's new to our team I'm contemplating writing her an email going into more detail about my leaving, going to the level of naming people who I feel are responsible for the general bad feeling in our department. Is this a bad idea? People always say don't burn bridges, and I don't want to; I want to give her some constructive (but potentially harsh) advice to help her try and turn the team around. Any thoughts?