Yeah, I feel like that would've been the best route...Arkane proved they were amazing at that sort of game! Rebooting it into a solo, single-player experience could've worked. Instead, they were forced down a path unfamiliar to them, just because executives meddled and wanted yet another multiplayer/co-op game.
Dishonored has, in my opinion, the best level design of all games ever created and it's not even close. I'm so sad to see their studio go like this... What a waste of talent