Well, if they go the direction I think they will (which has not proven the case so far - I don’t have a good track record for guessing these things, but I remain hopeful), then the finale will see Rey and Kylo end up on the same side as founders of a new, stronger Jedi order. Instead of training the new generation to completely avoid the temptation, they will teach the new generation how to judiciously tap into the power of the dark side without falling victim to its temptations. Kylo will let go of the anger and hate and come back to a balanced place.
I thought similarly. I would like to see that ending.