Picked up the concept of essence transfer.
As an adult, the resurrection of Palpatine in canon was as stupid to me as his resurrection in Legends. (As a kid, his first return in the original Dark Empire was pretty cool. DEII and Empires End were and still are dumb though.)
But some like it. Live and let live.
Some elements of the DE comics were beyond cool, and some were beyond campy. It was a classic example (and ROS confirmed it), that some things that can 'work' in comic book stories just won't work on the big screen.