I think contacting patent trolls about anything like their opinion on legal matters about existing projects is a huge mistake. It only gives them the idea whom

I think contacting patent trolls about anything like their opinion on legal matters about existing projects is a huge mistake. It only gives them the idea whom to shake down (namely you, since you contacted them)! It also probably makes it easier for them to claim that you knew about their patents when they come to shake you down. Don't feed the trolls!