I think XIV could take a page out of XIs book in this case again and devs could design furniture that could be purchasable with the guild marks and placed in our residence when those get released.

I figured couple adjustments could be made where you would not be able to synth something that needs guild support at all unless you have that support. Therefore, a furniture could be created that would grant you that support for free while in a residence.
Example:
Furniture piece #1- requires lvl 25 crafter - grants common support
Furniture piece #2 -requires lvl 40 crafter - grants advanced support
Furniture piece #3- requires lvl 50 crafter - grants master support

In XI the furniture piece just sat there but it would be great in XIV if the piece was actually interactive. By that I mean the furniture piece would be some sort of advanced work station that crafter could use. Piece #1 for gold could be a table with a chair, #2 could be a fancier table, #3 could have a light and some fancy device to look through while crafting.

I think changes like that would provide crafters with more content and variety and give us something to strive for.