Things didn't get any better for him in the IDW universe. He worked at a Decepticon space station; he was harpooned but survived; and then Impactor harpooned him again. He didn't survive this time.
That's it. That is everything Treadshot has ever done. Now, you could argue that them's the breaks, especially for a late era toy that really, nobody cared about. On the other hand, this guy is a GUNSLINGER. Yep, an actual, bona fide gunslinger. It states that is his function, and that he's really, really good at it on his Tech Specs. Now, to have what amounts to Billy the Kid on your roster of characters, and then just not use him at all? Unacceptable. I demand a Westworld type story where Treadshot goes haywire and stalks Transformers to their Jesse James-style deaths. This must happen.
To sum up then: Treadshot = gunslinger = wasted opportunity to make Lee van Cleef 'bot.
For shame, Hasbro.