I did "Dine with an Imagineer" this past trip, and ate with Diego Parris.
While officially Disney says that every Imagineer position is publically available, I strongly suspect it is an internal only promotion. Something that someone with tenure in the company doing something else (like working at a theme park, or in animation, or park operations) is likely to be tapped for.
I strongly doubt that if you apply straight out of college, or even with years of traditional experience, unless the applicant can prove they are overwhelmingly qualified for WDI's own internal qualifications (which they will never share), they'd even consider someone.
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