I don't understand the fascination with a Bumblebee movie. That will be an easy pass for me.

Bumblebee is my almost 9 year old sons (who technically is the target audience) least favourite character. He only collects Bumblebee to complete his toy sets for things like RID2015 and movies but they sit on the shelf and gather dust while Optimus, Megatronus and even Sideswipe get loads of "play" time.

Wouldn't an Origins of Prime or a Rise to Darkness Megatron movie be more appropriate? As much as some might say the characters of Optimus and Megatron are overdone these days one thing that would be fascinating would be THEIR origin story given it is now implied they were friends/brothers/comrades prior to the rise of the Decepticons in most media.

I don't understand this push to make Bumblebee such a dominant character (I suspect someone is touting him as the potential Optimus replacement/new Prime). As much as I loathe Rodimus (yes - I still blame him for the demise of Optimus in 1986) I'd rather have him introduced than see more Bumblebee. Movie Bumblebee hasn't evolved at all in either design or character... he hasn't even got his voice back!
There are also so many other wonderful characters in the Transformers universe from both the Autobots and the Decepticons (without even getting into the other factions) they could branch out with to bring some fresh interest to the movies.