Maybe we can expect to accumulate Gil from the daily quests that YP talked about at PAX.

...After that, we asked how daily quests will differ from guild leves. Basically the dailies will be used to expand on the story behind the beast tribes in the world. The quests will explain motivation, lifestyle, and various other factors related to what certain groups are doing in Eorzea. And of course there will be item rewards that aren't available elsewhere.
Reference
http://massively.joystiq.com/2013/09...expanding-fun/

p.s. I would just like to point out the obvious. This game is still very much in its infancy (we have not even subbed yet). Of course there are going to be balancing issues that need to be worked out over time.