Amazing work. Square Enix could probably make this happen pretty easy, i mean it basically does the same things just in a different, much more streamlined UI.

Sadly, since they likely make a small fortune from retainers alone unless everyone banded together and went on a type of retainer strike, which would never happen, i don't think Square even thinks about retainers much less revamping the UI. It's sad because retainers are a very important part of many players who craft alot, sell alot and so on. I easily waste 2-3 hours a day adjusting market prices, adding new items, ventures, fishing out items i need for a craft etc. All the while im paying Square for this - ok its not exactly expensive but still.

Nearly everything in the game has been revamped to some degree except retainers. Since they cost real money it seems prety clear to me Square are happy to not bother with it and just keep taking our money for them.