I can update that, actually:
Duty Roulette, not counting Gil drops from enemies/default Guildhest rewards;
Expert - 4,500 + 4,500
High - 1,500 + 4,500
Low - 3,000 + 4,500
Trial - 4,500 + 2,700
Scenario - 1,500 + 4,500
Guildhest - 990 + 1,125
Total - 15,990 + 21,825 = 37,815
Alexandrite Treasure Map - 1,600 per, can get two a day if you push Mythology.
Regular Treasure Map - 1,600 ~ 5,000 a day, plus chance for an Unhidden Map, which is 10,000 ~ 30,000, or can be sold on the Market Board.
Beast Tribe Dailies - ~700per, six quests, ~4,200 a day.
Hunt Marks - 1,000 per regular, 2,000 per FATE. 7,000 a day (not counting FATE drops).
Do all of that a week, and that's 376,705 Gil a week. Add to that the Weekly Hunt Mark Bill (5,000) and the Challenge Log (56,000), and that's 437,705 Gil a week. Not counting any Gil from various FATEs, Levequests, Guildhests, Dungeon mobs, or Retainer Ventures. Going through Expert and High level dungeons alone is probably going to net you 1,000~2,000 Gil each in enemies alone, so that's something like another ~21,000 Gil a week. Dependent on their level too, but Retainers can bring in about 1,500 in Allagan pieces per day as well, so depending on how many you have that's a fair bit of Gil to add for next to no work.
Personally, I'd opt for spamming Guildhest Roulette. Can get unlucky with some of the higher level ones, but 1,125 Gil for a couple minutes work is nice (I'd say about 13,000 per hour, can make 100,000 Gil a week fairly easily off that).
And like I said last time I listed all this stuff; I'm not suggesting doing all of that every day. Do whatever you can, this game still throws Gil at you. With all this in mind I'm still amazed people can be so poor though. The game is giving out Gil at every turn.