Actually I would say the opposite. The film wastes no time talking about how the dream-sharing technology works, there's no Star Trek style technobabble. The audience is simply presented with a world in which this technology is taken for granted, and straight on with the story.
It's the fact it takes the relatively simple concept. 'We are exploring their dreams for data' and pushes it to a unnecessary level of complexity.
A limbo state within a dream, within a dream, within a dream, (within a dream?).
It reminded me of recursion in programming, waiting for it all to unwind.
Not to mention all the rest of the things which just added to the complexity of the whole experience. Don't get me wrong, I enjoyed it and could follow the plot, but it constantly felt like it was adding complexity just for the sake of it, not necessarily improving the experience.
I don't really understand why they had an entire training montage where she learnt to bend the world, experimented with physics, limits of dreams, even taught her some clever tricks such as 'penrose stairs'. Yet, when it came to her utilisation in the film, she was not seen to do anything? (I know she designed the levels, but ultimately her role in doing that seemed to be ignored. I was awaiting her to use her 'amazing skill' to do something great to help save the day.
I went into the theatre not knowing what to expect. I left dumbstruck, somewhat in doubt of the world. What if I was three levels deep and this wasn't the real world? It was great seeing the viewers dazed, stepping tentatively towards the exit.
Many of these ideas were presented in The Matrix but the "idea" of n-deep illusions was central to Inception. I appreciated the time multiplication, even given the 20x fast brain function bodge.
Why were the acceleration changes only go one layer deep? Perhaps inner ear sensation (balance, acceleration) in the dreamer's world are the only modifiers. It doesn't matter, the construct produced intriguing new effects that I was pleased to experience.
We should be arguing about interesting ramifications. Personally I'd like to believe that Mal was correct and Cobb was dreaming all through the film.