Thanks for the quick reply.
There is a little bit more to it than just the video stuff. There are other things like being able to use marquee artwork, a carousel mode and other visual tweaks/adjustments made by the RetroPie team.
Totally agree that the integration or merging the 2 forks is no small task hence why I asked if had been any discussion or thoughts on it.
I'm interested to see what comes of the possibility of a new front.