You could also try joining an undersized garuda pony farm, most people don't care for the weapon drop so you'll likely only be rolling against one or two.
So buy/craft things that are typically 100-200k+ apiece that I need potentially hundreds of... or farm primals that wherein I have to:
A) see dropped weapons that are classified as BSM and not GSM/CRP/ALC...
B) win against X many other people who probably don't care about my desynth level.
If I wanted to farm cards/ponies and try to convince everyone to pass on BSM weapon drops, I can do the following:
Mog HM: i75 weapons (might be too low)
Titan HM: i80 weapons
Levi EX: i95 weapons (might be too high)
Turn 5: i95 weapons (might be too high)
Ramuh EX: i100 weapons (probably too high)
Shiva EX: i110 weapons (definitely too high)
I can see myself farming some of these without pulling my hair out with an undersized party under the guise of pony/card farming. (edit: not for Mog or Titan, EX only gives accessories
)
But basically Square Enix needs to make more ilvl 80-110 craftables to fill this gap that don't require your firstborn to create.