Demand among the community for base building related things seems to be the most important feature yet to be developed.
If you follow what mods are being used, the most popular is the CodeLock modification, allowing players to omit tedious process of manual code entry.

This can be not only brute forced, which is acceptable, but also easily done by macros and other 3rd party softwares.
The amount of effort that it takes to put in a code into lets say 3 gates is not worth the hussle I would say.
We know the game tries to keep it realistic, but pros and cons of having digital codelock versus combination locks is disproportionate in favor of the digital approach.
Being raided is being raided, which is fine, but having people use macros to access your base is just depressing.
You could have that item by default not in the loot table, or maybe craftable using electrical repair kit, etc.
Maybe you could add new mechanic and item to gain one → use pliers on (whatever object) and have chance of scavenging some electronic parts required to craft one. Maybe develop probability chance of succes, while failure would equal to electrical shock and result in instant death. We don't need to have it easily attainable, we would just appreciate better balance between playability and realism.

Not only that though, is what community needs. More base building possibilities, smaller variants of gates (which would open way more buildings for settling), more STORAGES.

Having gunracks, and in general dedicated storage is very needed change. There is nothing strange in having a gun display in a postApocalyptic world since well.. It is oriented around guns too...
"BadAss" people like to show off thier weaponry.
Those could be crafted from sheet metal, or attainbale in any other way. And again - you would not have to have them spawn on your official servers.

I can assure you, that any of above changes (codelock / upgraded combination locks [keyboard input also possible / only one-time code entry → just F to take off] / more base building structures / storages) would be the most appreciated, and biggest change for years. At least in players eyes...