Quote Originally Posted by DrWho2010 View Post
every retainer is its own instance basically. not possible to do.
Crafting with ingredients on the retainers would be difficult, as that involves accessing/removing items from multiple retainers at once, but at least seeing what's there should be possible. It's not the full request, but enough to be helpful at least. Essentially, when you go to a recipe in the crafting log, do a behind-the-scenes search for each of the ingredients, and just below or beside where it tells us how many we have on hand, tell us how many we have total.

It could be limited to a local search, without taking up the server's time. At least since patch 4.35, when the Item Search List window was added, we know the information about what our retainers have is stored locally on our client machines once we've accessed the retainers at least once during the current session. So long as it's view-only information, this behind-the-scenes lookup by the crafting log could be limited to that local copy of the data.