http://www.youtube.com/watch?v=oFABEnF7b6I
It would be something like that...How annoying and boring would that get?
This would make the game WAYYYYYY too easy. Seriously. I see so many people go on about how easy FO3 and NV are, and adding anything of this sort would make them so much easier. There'd be absolutely no challange whatsoever. The only way to make it more difficult for the people that use the TB combat would be to make the baddies harder, which would only hurt the people that like to use RT combat.
On to the actual topic of the thread:
It doesn't matter who makes makes it, people are going to complain no matter what. If Bethesda makes it (which is most likely) people will inevitably re-hash the simple and mostly idiotic tired complaints they have about FO3. If Obsidian makes it, there will be complaints from the other side. If a third party makes it everybody will complain unless it lives up their personal expectations of what they (the player) feels the game should be. Before anyone start flaming me about this, I've played all the FO games, since they came out, and love them all. I found flaws in all of them, but I don't blame the sudio that made them for the flaws and saw that those studios are crap. I don't because until I can make a game like any of them, I have no room to complain about anybody elses games like that (whether it be writing, continuity errors, bad game-play elements, etc.).