I've come up with a somewhat good route to take, around 12k muffins. Kills Ghatjot, Leshonn, Skomora and all 4 roaming NMs, offering many opportunities for sapphires for earrings. Only kills as many trash mobs as needed. Requires a knowledgable group that knows their way around the map.
Open to feedback, suggestions on how to improve.
I'd suggest not doing *long* steps such as B key, D key after you do them the first time. Wastes time for optimal runs after first time doing. Based on past 2 runs it seems possible to get roughly 18-19k Gallimaufry consistently (some variations based on Obdella spawns), along with all 4 area bosses and 4 nms in this method.
Usual setup both times was PLD, RDM, COR, BRD, BLU, WHM. (RDM is interchangeable with GEO)
Full time Bolters roll between every group of mobs, Samurai Roll only for fighting, chaos for bosses. Saves time rolling if only need to do 1 roll at a time.
From start: Run north pull around 6-9 Acuex and single target tag each of them while the BLU is aoe cleaving them down. You should get Shard, Metal and blue chest in this 1 pull. Then run straight to A boss and kill. Usually have around 50 minutes left by the time it's dead. Sneak is all you need for this part.
After A boss is dead, straight to B and do B shard/metal objectives along with other blue chests. If porxie is found, kill asap, if you get red chest cool, if not, unlucky (idk proc yet).
Ignore Umbril path and stick to north side for elementals over Umbrils, only go down there if porxie is there after shard/metal drops. saves time not needing to sneak/invis since elementals only aggro to magic.
Once shard/metal drops and porxie is dead you rush to B boss and zerg down, you should have around 40 minutes left by the time it's dead providing everyone is being efficient.
Area C: PLD will pull around 6-7 Corse mobs based on where the optimal pathing is and funnel them in corner. Cor and Blu will work on multistep SCing 1 corse while the RDM low tier nukes for MBs. While this is happening, PLD should solo SC and MB their own SC on another corse; (maybe bard can help with solo light SC/MB idk I don't play bard.) Doing this method we got the shard/metal for C with 32-35 minutes left
Area C boss dies within 2 minutes, probably the easiest boss out of the 4 main ones.
Area D: After killing C boss you run straight to area D probably killed Bhoot NM by now, usually roams around Corses from the past 4 runs I've seen find and kill D NM and if it's in a group of mobs, pull them all. If the NM is in a room full of 9 Fomors, pull everything. Kill nm first, then do multisteps on the remaining Fomors, 6 is all you need to kill while doing multisteps. Same as C objectives, Cor and Blu do 1 mob, PLD soloes another mob both items should drop within 3-4 minutes.
Once D shard/metal drops you go straight to boss and zerg it down, dies within 45s. By the time all 4 main bosses are dead doing this method twice now, we've had 25 minutes to spare roughly. You use the rest of this time cleaving almost every fomor you see, if you're missing any of the smaller NMs(leech, porxie, ghost) then probably use map to determine optimal pathing to find them on wide scan and once all 4 are dead, run back to area D and focus cleaving every Fomor.
Things I'd suggest to change about my own runs:
RUN over a PLD tank for the sole purpose of better survival odds against a mass pull Fomor group. Defense down means tank dies almost instantly in a mass pull, sometimes mob pathing means you can't block so RUN's innately higher Meva has better chance of survival. And yes I've still died with 5/5 Sakpata and carrier's sash because of defense down landing. Mobs go from hitting for 0-20 to 350-450 with defense down, with many Fomors on you, healer isn't keeping you alive unless you bot Panacea or something idk. However if the Fomors are nice and don't run inside of you and you actually CAN block, they aren't threatening at all. Just RUN can lessen any bs RNG that can happen.
Another change would be GEO over RDM for faster cleaves on Fomors.
Optional objectives:
I didn't include objectives such as resting/Devices because they are so quick to do and not really time consuming that you can just run there and do them instantly and on the way to the next area. We do them all except keys. We rest, buff spell, hurray, kill mob at C device and drop entry item.