I don't think the changes needed for an Order sequel are that drastic.
-Enemy encounters were pretty fun, but needed to be a bit more open and introduce more of them, but perhaps shorter to keep the level moving along.
-Too many long cutscenes. Easy, just cut them down and use more dialogue during actual gameplay. Game does this in places already so it shouldn't be a big deal.
-Investigating things need to have a purpose. Have them properly tracked and have actual ties to the plot or subplots.
-Werewolves. Ok, the smaller werewolf encounters need to be completely rehauled; they were trash. I think the boss encounters are ok, though.
-Which brings me to QTE's. Fine for some bosses, but just use less of them for the run of the mill stuff. Seems doable.
-Story. I enjoyed the first one, but the
stuff should have progressed further. The sequel can leave room open, but also needs to tell a complete story.
Anyway, The Order as a series is far from being beyond saving in my opinion.