From a crafter's viewpoint, there are 4 options at the box as to what supplies you would like to do. I'm a WVR and could make all of the options at 50. The options are:

Defense/Evasion Up
Attack Up
Regen Effect
Enmity Reset

The chest of stuff is near the beastman entry point, so its a little dangerous. I suggest grabing the mats then running back across the bridge to synth in safer confines. Once you turn the item in to the Quartermaster (also near the chest), the effect takes hold.

One interesting thing, if you are carrying mats and get hit, even when not synthing, you drop the mats. This obviously sucks. You then would have to run back to get more mats. It is therefore quite important to protect the crafter as much as possible while still defding the hamlet.

Also, all the buff effects go to the NPCs as well.

No xp from crafting during the run.

When a gatherer or crafter turns an item in for bufs or debuffs, they automatically get hate from a single mob. This happened without fail and regardless of the current hate on other party members. Be prepared to have a DPS take that hate back before turning in an item to avoid potential disaster.

I'll post more if I find anything else interesting.

Oh, and this is fun as shit too. Prestige party, yes please.

Just wondering if you got any exp for completing synths?

Sounds fun. Looking forward to this.

No xp. Though apparently spiritbonds will land.

Doctor Mog video. 40k+ Hamlet score

That was a level 2 apparently. Still very good. WAR stack ftw.