My friend also greatly enjoyed Garrisons (and WoD in general) because it was so generous with money and crafting materials.

IMO FFXIV devs need to carefully balance what gets added to the Islands. Too much while convenient will have more people sheltered in them rather than spreading out where they go. My suggestions are:

1. Add aetheryte - hopefully under the Estates menu so it's cheaper.

2. Repair and vendor for when you're queueing dungeons while toiling away in there.

3. Perhaps Retainers too, although I don't use them much so can't say how essential that would be.