Hello!
I would like to summarize few proposals from Arelith Discord. Due to lack of citizen storage (because Sencliff has no settlement feature) and considering that it would require settlement rework (as Sincra confirmed) here are few proposals :
1. To increase the chest quantity in Sencliff quarters and vaults from 20 to 32
This would work as +12 slots from citizen storage. Workable for main characters, hurts alts.
2. To change status for Sencliff vaults - simply to allow rent them even if player has currently a quarter.
This would allow everyone to rent an additional space to minimize missing citizen vault. Works for both main characters and alts.