-Step 1
Only if those areas are already integrated into the actual world instead of being pushed to the side and away from everyone else.
-Step 2
We should already have those. I dunno, I haven't checked in a while.
-Step 3
Sounds like Guild Tasks but I guess you're talking about doing the whole task of getting and making the items in that time?
-Step 4
Sounds like Grand Companies.
-Step 5
All for some AF style crafting gear.

I like the idea of mini games as a gil-sink. Like some sort of card or chess game to pass the time. Maybe even with collectible pieces or cards.