My opinion:
I don't care about the setting as long as the game is part of an IP Obsidian owns and can keep*. Just make an RPG inspired by the classics and create it in an environment in which you don't have to ask anybody for permission - especially not some marketing suits.
* This rules out sequels to games they were involved in before, unless they can aquire the IP from its owner or at least get a long term license for many years.
Right. They should imho build up their own thing.