I know devs have already touched on wanting to add more barriers so that you arnt kevlar gun god in just a few lucky moments. I thought I would add my idea on how to help accomplish this. There should be exp - achievement systems with limit talent trees.
For example, you start at 0 with just your rock and torch and such, Once you build your first shelter, it unlocks more crafting for you, and perhaps points to put into a talent tree. And put gun use deep into a talent tree, so you have to progress far to use a gun, you may find them...but they will be unuseable.
And I hate to say it, but i think its needed. WHEN YOU DIE YOU LOSE EXP. This will add risk to base raiding. And to the people who throw down sleeping bags and just bum rush people. It will make you think...is the risk worth raiding that house, is it worth losing my ability to use guns for a while?
Some trees I would like to see:
Home defender: this would focus on giving you perks when you are in your own shelter/home to defend it. Things like "When in a house/shelter with your own door ((or door you have a passcode on)) you gain faster reload, or resistance to damage". They would also gain crafting recipes that are deep in the tree that are only useable to them. Things maybe like traps, or cannons for defense.
Survivalist: This tree is for people who prefer the open wilderness, they road is their bride. they get bonuses like "Move slightly quicker when in forst area" or "bonuses to food eaten" and "bonus bow damage". Their crafting special would give them things like crossbows, or maybe a camoflauge option.
Assault: these are the psychopaths who rush headlong to raid a fort. Their get perks like "larger clips" and "chance to craft double c4". Their deep crafts would be for other siege options and perhaps better weapon mods.
Builder: This man is a master base builder, while others defend it, he crafts the home. Things like "reinforced walls" or "small hidden wall safes". This man would definately be wanted on a team to build homes and new forts. HIs deep crafting would be things like maybe trap doors, or traps aswell.
I think this is a terrible idea because it takes away the hole freedom do what you want aspect to the game.