and crafted sets aren't BiS, Why can't you just sell us gold Jewelry of crafted sets from the writ vendor? A full 3 piece set for 300 vouchers. Bind on Pick-up.
There are lots of complicated ways to do it, but using master writs as the gate keeper would seemingly take very little from the programming side. We could finally craft our way to 2 full five piece sets. 300 vouchers is a major grind if you look at the whole process to get there.
If you limited it to 9-trait crafters or something like that, you could really add value to the research scrolls. Also, if there is jewelry added to the writ vendor, then he probably doesn't have room for the research scrolls. So we would insist you continue to make them available in the crown store and crown crates. ESO Plus research time reduction gets a value bump as well.