And even I back down from what Fallout 1 and 2 was, the expectations on modern RPG's to be short and focused is a fairly hopeless cause, and the wrong expectation for this game. If you want to be a puritan and hold Fallout 1 as the model for Fallout games, you are going to be dissapointed with this. If Fallout 4 turned out to be 10h, most people on Neogaf would be dissapointed and post "will wait for sale" comments.
I mean, when people compare Fallout 3 with New Vegas, where they hold New Vegas as the superior one (as I do), the most used pic is the one that compares quest density.
And just to avoid confusion about where I come from, I played and beat Fallout 1 when it was released. I'm not new to the series.