A couple of things in that commentary stand out more now in light of the Toyfair announcements:

IDW and Hasbro were looking for a Megatron SPOTLIGHT to feature the same body that the character currently sports in the TRANSFORMERS: ROBOTS IN DISGUISE ongoing series.
...Because they were making this series of Spotlights specifically to go with the new toys.

... there is some Editorially-mandated content. The through-line between this current batch of Spotlights is a connection to Metroplex and the Space Bridge technology he possesses.
And the reason all the Spotlights have some connection to Metroplex is because that's the huge toy they want to sell. (They probably could reprint Spotlight Metroplex with that toy too.)

I'm glad to read there's been some good tales too in this lot, but clearly Hasbro is having a bit more to say in the IDW patch at the moment.Of course if any other Spotlight is announced we'll be expecting a toy.