Now hang on a second, don't forget about the two games Obsidian developed prior to New Vegas. Knights of the Old Republic 2 and Alpha Protocol - both action RPGs. This wasn't at all a new concept to them by the time Bethesda hired them out to do New Vegas, Obsidian's first attempt at creating an original IP was in the form of an action RPG. I'm not sure what you're talking about...
Come to think of it, I rather enjoyed Alpha Protocol's system. It also featured a sort of perk-based setup that managed rather well to account for a variety of characters and character advancement choices that were meaningful and impactful. One thing I really liked about their combat system was how accuracy was improved as you leveled up and selected different skills to focus on, and was (I felt rather elegantly) portrayed via a shrinking and growing of your targeting crosshairs. The game had some issues, but I thought it was a really great action RPG - too bad they never got to do a sequel to kind of iron out some of it's kinks.
Back to topic, I feel like the new system at least has the potential to make for some compelling choices during character advancement in an elegant manner. Simple's not bad so long as it's well refined, I feel - and here we have a couple layers of mechanics that tie nicely into each other, at least on paper. Hopefully we'll see a more unified system where everything that is included in the ruleset is balanced out and functional in important ways.