Aside from more space in the player house chests, I would be very interested to see fellowship hall chests. A lot of what I have stocked is what I’m waiting to trade to guild members, and it’d make life a bit easier to simply put what I have in a shared chest instead of coordinate the trade.
Pardon to deviate from the topic a bit further, but to get fancy with fellowship storage ideas, I think it would be really neat if something like this could be done:
-Fish tank that displays fish stored inside (even if multiple sunfish, only one is seen swimming around, total one of each type of fish visible if at least one of each type is in the fishing chest)
In the fish storage chest may also be other tabs for lure ingredients or completed lures, displayed similarly to the player house lure table. Maybe like a display cabinet or on the wall by the fish tank?
-Harvestable items chest that maybe displays in appearance like a garden (or table, or display cabinet) and ditto for despite the number of a particular item inside, one is visible at a glance with the display
-others similarly done depending on type of item and how that could be translated into a neat display. I only had those two actually semi fleshed out in my head 
Edit: I realized after the fact I didn’t have anything else fleshed out cause I was not the originator of either creative idea. Fish tank original idea credit goes to Sparky, and original garden idea goes to Daeresha. So, /bump for those threads
Also, what about crafting being possible in the fellowship hall? It would feel more communal if someone were making lures while another is making potions, etc, kinda working together on different things in the same space if anyone preferred that over crafting alone at home.