I got mine today! It's by no means without problems, but it's a really refreshing toy. And it's super nice to have a megatron that isn't a silver tank that turns into a robot that has a gun alt mode.
Despite being based on a version of G1 Megatron, there are soooo many other Megatrons mixed in. It overall vibes Unicron Trilogy, as a toy. The robot mode is very Animated Megatron. It's silhouette and head are very TFA. It's jet mode very strongly vibes Movie Megatron. It's tank mode very strongly vibes RotF Megatron And it's battle mask face is directly inspired by TLK Megatron (which it's robot mode in general also vibes)
It's a very fun Megatron and the complete antithesis of the last several Generations Megatrons.