I'm here to tell you, even after I purchased the trip from corporate, when I log into AA.com, I see my reservation, but I am NOT afforded the decision to move my seats beyond what is shown on the map I posted. If I log into AA.com as my wife (also no status) and want to buy this trip, I am allowed to choose aisle seats (albeit row 27 and back), but these seats are NOT available to me as a HRG traveller.

Now I don't know who to be pissed at, corporate, HRG, or AA!

EDIT - this appeared to be the case before I made the booking, but it does not seem to be the case now, all the blue P seats just show as taken via AA.com now...