Realistically, if you're pitching for the license now then you've got two plausible routes to get the license.
1) That you can toys better by reflecting the toy line better than IDW did. Not sure I see this as being likely, IDW already leant into this as much as I think it's reasonably possible to do, especially post reboot, given how disorganised Hasbro seems a lot of the time.
2) That you can pay more money, because you can sell more books. Now, I think Skybound/Image can probably sell comics a bit better than IDW given they're simply bigger, and they can definitely sell trades better, but that probably isn't a huge difference. So I suspect in the back of their heads Skybound feel that they can also sell more books because there's room in the market for a more popular Transformers title, either by using higher profile talent (not impossible) or by picking a story that will resonate with a greater proportion of those people who bought all those insanely numbered Dreamwave issues years ago. And I suspect that the main way you'd do that would be to do a book set between Season 2 of the cartoon and TFTM tbh.
I'm not necessarily saying that method 2 will succeed, but it's the business logic that must be behind any offer. I mean, IDW already tried soft rebooting and it didn't work (not very surprisingly to my mind but there is an industry perception that it gives a short term boost) and hard rebooting and that didn't work either.