Green_Hilltop: ...
I'm not sure if D:OS is like this or if I would like the story, since I disliked the dialogue in DD1.
Divinity: Original Sin? Hmm... How to put it - I enjoyed Divine Divinity 1... We might have different tastes...
D:OS has plenty of exploration, rich colourful lands, huge amount of NPCs to meet, all kinds of spells to learn, many small and big secrets to uncover, some puzzles (many of them in sidequests) and quite a bit of funny dialogue...
In my opinion it is one of the best RPGs ever made... To me it was better than Baldur's Gates, somewhere up there with Fallout 1 and 2. But then again, I'm a bit odd :)
The game is maybe less "open-world" than Witcher 3, since when you start, quite a lot of it is locked away, and then it takes some while to unlock it... But it is a large game, that allows you to explore in all directions later on, only hindered by the monsters that are too tough when you haven't leveled up enough.
I just finished Dishonored... I wouldn't call that a game that allows large scale exploring... The game has a certain amount of missions, you play them in a certain order... But there are many ways to complete missions and indulge into side missions as one pleases... And the things you do can affect how the future missions play out. A good game, but a bit linear.
Have you played Pillars of Eternity? That actually is quite a trip, especially with the expansions.
You get a "base" that you can upgrade, there are so many little and big paths to take...
Personally it was a bit too exploratory for me, I completed it but gave up on the White March expansion (that you need to solve before you finish the main quest, it seems...)
I don't know how the sequel plays out, but at least it has received some praise from gamers, as well.