Was the text that indicated that Expert Difficulty was for tuning the game in since launch?
You mean that expert was the default mode in early access?
Yeah, it was pretty much so. It was all balanced around this level and easiest dificulties were only introduced once the game launched.
I'm having trouble remembering, but I think at some point in EA there were two difficulty levels, one of them being equivalent to expert.
Also, there was no custom dificulty in EA and no rewinds.
For EA people: Did the level structure from early access back when it was called Incognita have any story? If so what?
You mean the story mode? There wasn't really any. The entire plot was only revealed when the game was out.
All we got was character bios.
There were no omni guards and final level. In story mode you had 3 days to prepare and they you would get a codename:insomniac mission where you had to recover a captured agent within a fixed time limit.
All in all, It was a bit more difficult but not as difficult as the current final level.
Did the Dialogue/Interaction options that were removed from EA mean anything beyond Flavor?
This system want through a number of overhauls, and finally they ditched it. It added a bit of randomization and sometimes offered a risk/reward scenario.
At first there were "dialogues" which popped up when you used a console fro PWR. You would receive a prompt that the security is tracking you and you could ignore it (raising the alarm) hack the protocol
or bribe the guard, which had a chance of actually lowering the alarm level.
Later on, there were also similar dialogue windows when you interacted with safes and doors, some of them allowed you to use your skils (hacking, stealth, anarchy)
to gain an added bonus. E.g. you found out that the safe was rigged and you had a choice to ignore it, disarm it, or go for it anyway.
Sometimes you could tamper with a locked door to try and unlock all the doors on the level, stuff like that.