The problem isn't presented as one of Psychology, it's Physics: getting the team together, running from mind "agents", stealing memories, rolling in a van while battling other agents on a different level of the mind, battling mind "guards" on your way up the mountain, working your way back through the subconscious of an aging man, and so on.
Issues of Sense and Interpretation are all over the place -- rain, sound, appearance, and so on.
Cobb has a massive chip on his shoulder - the guilt for driving his wife to commit suicide. (Stop dynamic)
You're absolutely right, it's a great example of the difference between storytelling and storyform - they go on and on about incepting - but the conflict in the story isn't about the process of "conceiving", it's about running a con of misUnderstandings in order to incept - or get him to UNDERSTAND - that he needs to sell off his father's business.