So I just left Palborough after a terrible time getting the 4 Fetich for Bastok 1-3 because there was a 99 THF in there slaughtering every damned Quadav because he wanted Fetches for Spirit Sphere Synths .. at least, I assume that's what he was doing, I asked him but he ignored me, but he has a partner who was synthing in a corner clearly and by logging his synth results it was clear he was getting the drops the first one was getting which is was using to synth spheres.
I see from reading about this synth that it also uses the level 50 limit break drops .. this means new characters will have an even more torrid time trying to progress since I presume they'll be competing with level 99 for rare mob spawns with even more rare drops .. something it seems is confirmed using Search and seeing 99 THF in nearly all places where these items drop.
SE, why? Why re-use core quest items needed by leveling characters for end-game synths? It's ridiculous.
[edit]
LOL, having gone to the Dunes to level up I see 5 THF 99s, I presume I'm having to compete with them for something else .. I guess the subjob drops.