On the notion of Dishonored 2. Setting aside the fact that the PC port is lousy, it's a lot of fun. Most of what was there in the first game is improved on, and you once again have wide-open levels with multiple routes through them, an enormous variety of weapons and supernatural powers to experiment with, and of course, the brilliant "chaos" feature that's determined by whether or not you can resist the temptation to wreak havoc with your abilities and leave a trail of ludicrous carnage in your wake. The biggest problem I have with the game is the story, which is largely just a rehash of the first game, along with the main villain from the DLC giving a repeat performance as the main villain here. That last part especially bugs me. Delilah was a genuinely creepy and memorable villain in The Knife of Dunwall and The Brigmore Witches, but there was absolutely no reason or narrative benefit to bringing her back. We already know all about her - her backstory, her abilities, what she's willing to do to gain power, etc. There's almost nothing new to say about her. Even the non-lethal method of eliminating her is virtually the same as the one from the DLC.
Going back to the story, it feels like a waste to do the exact same thing all over again with the same characters. The fictional world this series takes place in is a fantastic setting, with countless potential stories to tell. Instead of being a direct sequel, it should have gone somewhere else and focused on a different situation with different characters. It would make the game feel fresher, and from a business standpoint, would lend itself more naturally to a long-running franchise.