Whoa, nice!
So, I could really use help with the database. There are a LOT of new items. I've added a user comments page that is publicly editable.
So far - you can get WVR desynthable items for 9k and GSM desynthable items for 11k that are both r115 from Coerthas vendors. I made it from 107 GSM to 116 GSM in about ten minutes. And then I made all the money back by selling the 11k rings for 20k each on the MB because I'm a terrible person <_< The rings give BC2s, not BC3s. They are a level 51 zero star recipe. It seems that they are considered to be r51 for the purposes of item drops, but r115 for the purposes of experience gain and desynth difficulty. I had a 50% chance with dSkill 115. It remains to be seen how items obtained via the new one star recipes will be treated.
The Agate Rings gave only Agates (and the occasional BC2) from desynthing them, interestingly, even though crafting them takes both 1x Agate and 1x Basilisk Whetstone. I'll post more info as I get it, but I won't be doing much desynthing right now since I have both RL work to do, weekend plans, a main story to finish, and a Machinist to level xD
Leveling Crafter classes is fast though - level 51.5 WVR after about 10 minutes of the level 45 leves. It's only 5 leves to get from 50-51. Leveling crafters will help with desynth.... now if only I actually chose to focus my specialties on my desynth classes xD
EDIT: To be clear, the value I will be using for "rlvl" for items over level 41 will be the level at which the item has a 50% chance of successful desynth. This means that you'll have to pay attention to more than rlvl to determine an item's Demimateria drops for level 51+ items, and you'll have to pay attention to more than the recipe's level to determine an item's rlvl for level 51+ items. The 0* level 51 items appear to be "rlvl 115," for instance. For the level listed for the recipe itself, I will now be using "clvl" instead, followed by 0 or more stars. So, c50 items are r50, c50* items are r55, c50** items are r70, c50*** items are r90, c50**** items are r110, and c51 items are r115.
This matters especially for c51+ DoH/DoL equipment. For instance, c53 DoH/DoL equipment is i85 and r125.