Some of the changes made to 5e's ruleset are baffling to me. I might be totally wrong, but it makes me think the designers lack knowledge concerning 5e. The ruleset is well tested, and yes, it has some issues at high levels, but it works well. And I struggle to think of good gameplay reasons for the changes. If they keep these weird rebalanced classes and abilities, I really hope they give grognards like me a game mode that lets me play with a 5e ruleset (or something closer to it at least).
