Awesome - I think you got me but I want to verify. I didn't mean pipe dream as it being impossible to do but that doing it now that it is so late it would be impractical without delaying the game in-order to thoroughly test the system first.
To the crafting I thought how it first came out was great (like 200 ingredients to one recipe) but that they messed it up by not linking crafts together ("oh you need this item you dont have but can craft, and you have the materials - here is a link to craft this first") and requiring to grind on those insane ingredient lists. Rather they should have had the complex ingredient lists with a robust crafting interface and make each craft reward large amounts of experience. (My 'project' idea in the materia thread could work well with the most massive of scale recipes)
I would have preferred a 'magnus opus' like situation for all crafts -love how two bars of metal turns into plate mail.. lol
---
"Would love to see": An animation system that can link and sync animations together. Sync (play at the same time / moments) and link for more complex animations like a real handshake or high five a real dance - things that connect one player body to the other. I know the linking seems simple but I guarantee you properly "solidifying" characters adds a massive amount of immersion.
There is a dance thread /dance that I wrote that in but importantly to that thread it talks about better dances with more soul and life and even includes some great video links. While some people there wanted Gangnam style from when I read most said no to that but wouldnt mind some real takes on folk dances (someone posted some great folk dances that would be awesome on hyur).
edit: dance thread link http://forum.square-enix.com/ffxiv/threads/58131-dance
(there are actually a few dance threads but this one is the one I was talking about)