I don't personally think it should absolutely start at 0 but yes I do think it would be easier. To farm gold relative to prices on the AH, not to get the epic flyer faster.
If you limit the amount of gold everyone brings in, for obvious reasons it's going to take the majority of players quite a bit of time to get epic flying (which I personally believe it should).
Because the economy will basically be reset, goods on the auction house will go for a LOT less. This means that sometimes it might be good to farm mats but if that option gets too contested then it allows for dailies to be an alternative outlet for buying goods on the auction house because it is a static, guaranteed amount of gold from the very start.
If things are too pricey on the auction house from inflation, dailies no longer become a valid source of income. If it takes you a weeks worth of dailies to purchase one primal might for example, you are better off obtaining something overpriced to put on the auction house to make your money.
I could go into more detail if needed but the gist of this is
Inflation too high:
Forced to farm contested mats> No epic flyer, no competing> not allowed to purchase goods off AH to excel your character
Obviously the inflation will eventually kick in, but this allows new players to get set up in the economy so they are able to purchase goods off of the AH (like primals) because the prices will obviously be lower, because there isn't as much gold in the game yet.