You have to understand that if gil is easier to obtain, prices will go up- People have more gil, therefore sellers are able to charge more. More gil at low levels only helps with buying things from NPCs. The only prices that can be kept under control are the prices of items also sold by NPCs (as you can't sell stuff easily on the AH for much more than what the NPC charges in most cases).

Gil doesn't exist in a vaccum- it has to be destroyed as much as it is created. You can't just create more gil to solve this problem (Though, as I noted, I agree with you that the impact of FoV rewards is too small).