I would rather close Twitch than watch a pre-roll
I'm dodging pre-rolls like crazy. I'm not talking about muting the tab and doing something else while Twitch advertises to the void; I'm either closing Twitch and not engaging with the service or I'm going to keep refreshing, bouncing between streams until the system gives in and plays the stream without the ad—which, miraculously, works after roughly 15 seconds—a net gain given that most ads that play on Twitch much longer. And, keep in mind, the moment Twitch fixes that strange loophole, I'm going to revert back to closing Twitch and disengaging 99% of the time.
That is to say that I'm not willing to, upon my first visit to any stream during a session, sit through an advertisement(s) that I can't skip when I'm not even sure that I want to watch that stream yet—no matter if it's a streamer that I've just discovered or one that I've watched for years: it makes no difference to me. I'm not invested in that stream yet and so why would I tolerate unskippable pre-roll ads?
Pre-roll ads should have the option to be skipped or they should be removed. Simple as that.
Let me be clear: I respect and understand that Twitch must advertise to make themselves and their partners money, and stress that I am perfectly accepting and receptive to a carefully-planned and well-developed advertising system, which I believe Twitch's current system to be neither.
Twitch Turbo is not the solution where the advertising system exposed to free users is unfit for purpose. Why would I, as a level-headed, principled consumer who doesn't wish to simply buy a "free" pass, want to support a company that fails to develop a fair, working, thought-out system for its free users and partners? The only way I'm going to subscribe to a premium service is if I like what that company is doing for ALL of its users and believe in its mission.
I won't go into detail, but your advertising system has directly impacted my decisions when choosing whether or not to renew my subscriptions to streamers and Prime.
You don't need me to offer solutions past what I've already suggested here; there's others far more passionate, educated and experienced in what makes a good advertising system, and I know for a fact that some of Twitch's advisory council (namely CohhCarnage) have some excellent ideas to offer.
I must add that I am very surprised by the small numbers of tickets and votes that the issues present on this site have achieved, though I can understand why as it took me more than a few clicks to land here.
That said, I hope Twitch is not looking solely at this site as the source for feedback on their ad system for I cannot imagine it is only a vocal minority (of which I am not usually a member of) who is displeased with ads on Twitch.