Yes, I'd like to see a conversion of the rules to D&D made. No, putting it in the core d20 Modern book does not sound like the best idea.
A magazine article or web page sounds reasonable, but...
Perhaps they could publish a whole book of possible variant rules for D&D. They could include the d20 Modern ones, and other ideas the designers had while hashing out the core rules. One that were removed because they weren't "D&D canon" or some such reason.
It probably doesn't fit their business model, as I heard it, but it would be cool!
FM