If you used a HQ Lv75/99 Cursed item to make a iLv119 Cursed item, the change of HQ might look like 10%, but in actual, it is actually 1%.
10% chance to HQ the 75/99 item, then another 10% to HQ that, end result 1%, no different from taking the NQ and trying to craft it.
The question now is the availability of raw materials to even try to get anywhere close to enough sets of synthesis to get a HQ iLv119 cursed item. Don't forget alot of the stuff that are needed to make hexed item are stuff that are still hard to get from VNM, Prov Watcher, Legion or non drop items like Wyvern Scales.
