I've enjoyed LE but maybe key devs have moved on to this branch, like how they moved from openelev to LE.
Incorrect. It's not at all like the OE move where the entire team (literally everyone minus one) moved on to leave the single problem developer to work by themselves. Only the two developers that proved themselves unable to work to the standards set by the rest of the team moved on. The rest of the team are intact and the Amlogic mainline kernel change is our focus. The key developers and active contributors towards the future of Amlogic working on that are all here and things in the mainline camp are moving along quite nicely. There are event test images available in these forums.