Yes. So King uses the engine internally, right? The tech is driven by the Blossom Blast Saga team and by another 5 internal teams using the engine. In fact, the engine team and the games team reside in a same room, and are isolated to a separate building from the other teams. A close collaboration in a very productive environment. From where I am ;-)

Oh.. so the art/assets pipeline is pretty much dictated by the internal teams. But feel free to use the engine and explain on Defold forums of the good and the bad. We'll be happy to listen.