I'd be for an increase to the low level roulette reward, under the following conditions (assuming you are level 50):

If there is a non-50 player in the dungeon, killing less than half the mobs in the dungeon does not give you the daily bonus.
If there is a player with the "new to this instance" flag, you do not get the new player bonus if that player dies for any reason, and that day's bonus is forfeit.
If you leave the dungeon before it is completed, that day's bonus is forfeit.

The Low Level Daily Roulette is there to make the leveling experience better for new players, not to line your pockets, and as such, incentives should be included so that veteran players actually teach and play to the pace of the weaker players. If these restrictions are too much for you, you have no business asking for the rewards to be improved.