And possibly not in technical stability either.
I'm really only having high expectations when it comes to story. How interesting the NPCs and factions are. They're really going to have to outdo themselves there if they want to make up for running with Fallout 3's shitty engine, mechanics and graphics.
It's not hard to outdo Bethesda there, obviously, the bar's pretty low, but like I said, I don't expect them to outdo Bethesda, I'd like to see something reminiscent of Fallout's quality in writing and quest design. If anyone can pull that off, it's Obsidian.
So yeah, I'm happy. Many of us are. Some are still stuck in grumpy old man mode.