Unpopular opinion time:
I loved the Last Jedi and Ryan Johnson pretty much made Luke as great/powerful of a Jedi as he could while still fitting the plot in with existing canon and what was setup in ep VII.
We already knew Luke had disappeared, so it was already canon that he had essentially abandoned the cause for some reason, that was done by Abrams. Luke had struggled with fear and anger the entire original trilogy, so the cause in TLJ fit in well with his past, as did his reaction.
His force projection to save the day was probably the single strongest and most impactful single act of the force displayed across all the films and was just badass.
I would still buy this just because