Improved rewards in low level dungeons should not come out of DR rewards, but increased drop rates on items in chests. Dungeons give such good experience that most dungeons only are required to be ran once or twice. And with that already move you on to the next. Giving people often just a small number of gear pieces during the leveling route. Often unaware, or too poor, to purchase gear from vendors, they're poorly equipped in the higher level dungeons. Making kills last long, healing output be excessively low and incoming damage be needlessly high.