Sacred Haven of Debauchery

Of course, can Bethesda come up with anything worthwhile?

Maybe, if you remember Morrowind and Daggerfall. The problem is that they rarely do, and even when they do, it's usually not for the main storyline.

Well... it would have been very difficult to make an unworthy sequel to Fallout 3.

I was referring to parts 1 and 2, not TES5: Fallout.

As for the plot, I wouldn't say it's very engaging.

That means Obsidian is staying true to itself.