As I previously stated:
People like you fall into the second of these - people with the vaguest of recollections. You remember it, might pick it up because it looks interesting or cool, but you're not invested in the characters or mythos at even remotely the same level as a dedicated fan is.
And yet they're doing infinitely better than Jayce and the Wheeled Warriors, Starcom, Air Raiders, Spiral Zone, Silverhawks, Sky Commanders and Centurions, to rattle off 7 now dead 80s properties off the top of my head.
If it's so "niche" then why did IDW try and piggyback it off one of their main titles? Just like if Visionaries is so "niche", then why are IDW trying to piggyback it off Transformers and make it mainstream? Why would the bean-counters at IDW have given that the go ahead if there didn't look like a sizeable return in making it mainstream?
Well that, car set piece chases and a litany of explosions - last I checked, that was the Michael Bay formula for churning out blockbusters which have little if any substance but are almost guaranteed to generate alot of box-office revenue.
Define success though? Financial success, sure, like I said, the Michael Bay formula works and it's arguably the only reason he keeps getting the director's chair. Critical success is another story. In fact a while back I watched an episode of Spicks and Specs where it was noted that Age of Extinction simultaneously managed to be the highest grossing box office film of 2015, whilst earning 7 Golden Raspberry Nominations and winning the categories for Worst Director and Worst Supporting Actor.
In fact the Michael Bay formula proves that it's possible to make a movie that is both a steaming turn and a runaway financial success.
Because you don't want to see it. You don't want to see that it's the dedicated fanbase that is the reason that someone in a media or toy company floats the idea of resurrecting a property, by serving as a core clientele to build on. You don't want to see that tokenistic change for the sake of change, is going to be rightly seen by that fanbase as treating that property with disrespect - at which point it alientates that fanbase.
You don't want to see that losing that core clientele is tantamount to ripping the foundations out of a house - sure it might look ok at the outset, but the moment the supporting walls come under strain, the whole thing is going to topple - which is essentially what happened with it.
So you're right, I haven't convinced you that tokenistic change for the sake of change was the start of the end for the book.
However here's the thing, you haven't convinced me that you're even remotely open to being convinced.