As it stands, there are really not many options to make gil. It's more or less gated by crafting, gathering, and RNG rare drops from retainers. As someone who doesn't do crafting/gathering, and has no interest in it, there is virtually no ways to build up my purse. "Merc" groups were a pretty popular thing back in ARR, but I think with the inclusion of story mode, there will be a huge decline in that market as well, at least until harder content is do-able with 7 people and rewards unique cosmetics.

My thoughts:

Make other currencies have options to sink into gil, or buy materials for crafters/gatherers. Law, Eso, Wolf Marks, something. I have been sitting at cap for weeks now with nothing to buy, it'd be nice if my work in accumulating these currencies meant jack-all after finishing my gear set (Before it's said, I have full 180 law gear for every class, and all the pvp gear I need, so no, gearing alts is not a realistic alternative.)

I'm not saying gil should be easier to obtain, rather I wish it was more accessible to those that have no interest in crafting and gathering.