I tried to craft in Den but it is useless. You have to go to town to remove gems and graft sockets. If it should be Hideout then you must visit to PoE HIDEOUTs ( blizz). Try to think up some use for other materials than Veiled crystals. We need them in every place in your crafting system.
PS. Where we can find Ancestral legendarys, the bosses drops only Uniques. Nobody woun’t sell them either or they cost more than Uniques.