Book a quicky flight. Asking for the 500 miles will get you no where.
Go to
www.aa.com/netsaaver
$158 round-trip from DFW to Wichita. If you fly 25,000 miles next year you will earn an extra 0.25x25,000=6250 miles=$87.5 (redeeming 25k miles for a $350 ticket, better return for international ticket). Add to that no bag fees. If you check bags both ways on 2 flights = 2x2x$25=$100. Already you have saved $187.50, which is more than $158 (plus whatever taxes) you paid for Gold. Plus you get the upgrade coupons (hard to use as Gold though). If you have to buy a Y class ticket, you get 1st class automatically. Plus board early, check in privilege.
Bottom line - the flight is worth it.