All is good your ICO terms are clear and yours is currently the best exchange but I have to ask. Why facilitate ICOs? why provide this service when it is clearly abused 95% of the time.
You are not responsible for the devs misconduct and everyone should know that. But you do provide the means for this to happen, let the shitty exchanges take your ipo fee bussiness, sacrifice a few btcs and become the better exchange in every possible way not just volume, pretty interface and security but honorable aswell. It's basically "I'm just selling the guns, you're the ones killing each other", well don't sell guns, leave it to the lower tier exchanges.
Bittrex wants to earn money and thats what they do. Why let smaller exchanges get these dirty BTC?
It is dumb to accuse bittrex for the ICO scams. They just do their job and you should do yours (if you are an investor you should do your own research before investing)