As far as the encounter design / enemy usage goes, I do find it hard to take (at least) Kingmaker seriously when it resorts to you fighting the same encounter over and over again in the final stretch, and some shmucks in the Pitax palace are more dangerous than an ancient cyclopean lich who can be defeated in one round. The Pitax part in general is where the first game starts falling apart at the seams both narratively and gameplay-wise, and if the WotR responses are anything to go by, Owlcat do seem to have a thing for starting (relatively) strong but then running out of steam past about two-thirds of the game.
I kinda hope for Rogue Trader to be smaller than what they usually aim for because of that. Shorter, but without nearly as much repitition and filler between the actually good parts of the game.
I would say the game died with the Vordakai. From that moment the game suffers from a huge drop in quality. The game would have been better if they had cut out the rest of the content at this point and moved to the end.
