Going all the way back to the original post, I don't think you need a "Premium" program to do this. In fact, I think the current "approved once, run all" is the most serious failing of the current program.
If Google really wants to separate the wheat from the chaff it simply has to change its terms to reflect that Adsense can only run on approved sites. Period.
And then just give a sub-ID for each additional site:
"pub-1234567891011-01 for tracking and reporting purposes.