I also enjoyed the game on release, I had very few bugs and the ones I did encounter I was able to work around in various ways. The most memorable one was a bug where killing the enemies would prevent the next objective from being scannable, preventing it from continuing and completion. Everything else was pretty minimal and I was able to 100% the game. Post game I spent modding which I also got a lot of enjoyment out of a little over 200 hours total in the game.
Haven't been able to get to Phantom Liberty yet, and I haven't started a new playthrough for the update be has I'm attached to my save (which is silly lol). I'll get to it.
I feel you on the lack of compelling FPS games these days though. Like Dishonored, but with guns!