I was hopping there would be something more in the dark cave - not necessary what Luke faced, but something. Also that Rey narative from third person felt weird “I was not afraid then, etc” (which is something I feel movie is suffering from, too much explanation, even justification), the scene looked cool but it all ended with mirror “trip”.
The same thing is true to an extend for Kylo. He’s obviously in a place of power at the end, but I don’t really feel the character has changed from the ending of TFA to the ending of TLJ. It seemed like it for a while, but then the reset button was hit in the throne room sequence.