That's a loaded question, but I like it.
I want to start by stating you and I appear to be on different sides in terms of INCEPITON's aesthetic. I love the use of shallow depth of field in INCEPTION which is that background blurriness you're talking about. It creates a softer overall feel. It's not as rigid as TDK. A lot of surreal films make use of shallow depth of field or this kind of "glowing" or "softening" of the image. You can really see this during the bits with Mal and Cobb in Limbo City (strong use during the train part)
The first dramatic difference right off the bat is style of shooting. INCEPTION is shot mostly on Wally Pfister's shoulder. Chris wanted a lot of handheld for this film and I can't exactly remember why, but I'm sure you could find footage of Wally explaining it. I believe it had something to do with immersion , but again not 100% sure. This also could be what's causing this sense of lack of deliberation for you. Pfister is simply following action, it never feels like the camera is moving for any subtextual reason.
Pfister & Nolan do continue their brilliant use of the "creep", which is when Wally slowly dollies into the actors face during a tense or emotional scene. You see it in the end when Cobb is back to get Saito, it goes from a medium shot to an extreme close up on Cobb. It's subtle, but Nolan uses it on every film in different spots and I absolutely love it.
As far as palette goes, INCEPTION is juggling about 3-4 different color palettes. There's the harsh blues of first dream level, super warm yellows for layer 2, brisk white for layer 3. The film uses these different palettes to distinguish the levels, Chris was very worried people wouldn't be able to keep up. It works, but it lessens the overall cohesion of the film visually. I don't think one part of the film necessarily stands out as out of place, but that third layer comes pretty close.
The third layer to me is missing something. It feels trite and borderline out of place. We all know Chris was inspired by OHMSS and all the countless other Bond films that feature similar sequences, but I don't believe he and Wally brought anything new to the table. As far as lighting goes, there ain't much of it for the outdoor bits. Wally's got some diffusion panels up, some flags, trying to wrangle the natural light, but there ain't much to lighting a big outdoor snow chase. It feels very basic as where the camera movements in say the second layer, with the rotating hallway and anti gravity feels a lot more dynamic.
I'm one of the guys who isn't exactly in love with the way The Dark Knight looks. I much prefer the overall look of Batman Begins, but that has a lot to do with art direction. Hope this big long ramble of a post was worth something.
EDIT: I disagree with the both of you, Dark Knight outside of those early IMAX CUs doesn't utilize SDoF as much as INCEPTION. INCEPTION has odd bokeh though, the top of the frame on some of those shots, like when Mal wakes up from Limbo, are fuzzy. I've never seen that on the Panny lenses before. It pops up in some other spots too. Downright weird.