The way i use my wanted lists, I don't want to flag a part as owned until
i get it IRL. As such i use remarks to keep track of things i have ordered and
don't have yet.
Ideally, a 3rd stat e of items on a wishlist would be added - something like
pending. However as that would be a significant back end change for the developers
of the site, i created my own tampermonkey/greasemonkey script to add links to
the my wishlist search for each given part on the order page.
So underneath the part/minifig/set image is a link to search my wishlists for
the given item in the given color. That way when i make an order i can click
through for each of the items and update just the remarks for the parts across
all wishlists.
a feature like that would be really helpful and should be fairly trivial to add
to the codebase. (particularly using server side code instead of scraping the
info needed for the links from content already on the page.