[Suggestion] Homestead Buff
There needs to be a clear choice in building a structure or living in caves without directly nerfing caves. There should be a tiered buff gained when you've spent time in or slept in a constructed shelter. It should be based on materials used and surrounding benches/ technology nearby. So a thatch structure with a crafting table might just give tier 1, but a concrete with tier 4 benches may give tier 3 or 4.
Tier 1: 5% movespeed 10min
Tier 2: 50 life and 25 stamina 15mins
Tier 3: 10% less damage taken 20 mins
Tier 4: Double all bonuses and duration
Players need a trade off from living in caves vs structure that's very impactful. This also gives a reason to go home and refresh the buff. Also a cave with humidifier can then be used as a structure like this with appropriate benches to justify the cost of the humidifier.