[quote=ThatDarnOwl]I don't quite believe them on that note. While not Upper City, the little garden behind the House of Grief looks very fleshed out for something that was never intended to be used (if compared to the other out of bounds areas) and the layout of Cazador's palace makes much more sense if you rotate the building 90° clockwise so the main entrance points to the Upper City Gate and the current weird entrance (which Astarion calls a spot to slip in) would be connected to the Chamberlain's office and the Spawn wing, which would make it a great side entrance to lure back "snacks". It's just a lot of little things. But overall a more fleshed out Act 3 would be lovely.
I don't see them adding a significant amount of content to Act 3 as it would likely take many months to develop. It's almost certain if for the sake of argument that it was cut, it was likely cut for a specific reason of getting the game out on time. Now that the game is out there's no real reason to readd it if all the content they planned for it has already been moved to the lower city.
I'd argue it's not a contrivance. It's probably the way the game was originally designed because it just makes more sense, simply put. The "contrivance" is what we have now.
BG3 is already finished. It doesn't make sense for Larian to put in arguably as much work as they did into Act 3 to add an equally as large area and rearrange content there. Especially since the game is already out and shipped. I would much rather they put that amount of effort into building the toolset they still haven't released.