What's in the Air
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 3,242,290 EXP — the identical figure every one of the 2 Lv 88 Fisher fieldcraft leves pays, so on this rung the turn-in and the walk are the only things that actually differ.
On whether to wait: the best Lv 90 Fisher fieldcraft leve returns 4,395,018 EXP per allowance, 36% more than the best on this rung, while the Lv 86 rung behind tops out at 2,953,920 EXP.
At Lv 88 this data holds 18 leves paying EXP across 2 categories: the 2 Fieldcraft ones average 3,242,290 EXP per allowance, the 16 Tradecraft ones 1,852,163 EXP, which puts this leve 0% above its own category's average.
Nothing on the turn-in list is craftable in this data: Rummy-nosed Tetra ×9 has no recipe here, so 9 units must come from gathering, a vendor or a drop.
The Great Work, Thavnair issues 15 leves in this dataset, Lv 82 through Lv 88, across 3 disciplines.