I have been thinking about a few things and from some of the other games I have played, I think some could come as a solution for some or a hindrance for others, allow me to say...
1. Backpack Size - There was a heated debate about backpack size and from playing a survival game called Fragmented I do have a type of solution, in that game when you unlocked the ability to make pouches in your inventory they took up 4 squares and when opened gave a varied amount of space, one pouch i found took up 4 squares and gave you 10 extra, sounds like a decent trade off, another game I played with a useful thing we could add is Miscreated, in that depending on the clothing you had on you would add a certain number of slots to fill, so jeans gave 4 slots and cargo shorts gave 6 slots, food for thought.
2. HUD Displays - I always wanted to play with the hunger and hydration on screen, and maybe we could make it a trigger to like F3 almost like the FPS on F8, so people could play with or without it?
3. Separate Bullet Casings - Honestly im all for it, would make looting more of a pain but that is why we scrap and have a forge, maybe the addition of a munitions workbench could be seen down the road as something else to add to our bases?
4. Traps - I have read some and thought of others and im hoping to see, Spring Spike Traps - spikes shoot out from a direction when triggered, Spear Launcher - Same idea as dart trap but you load it with wood spikes, Shrapnel Mine - No need to explain and its not like we dont find scrap metal everywhere in the game.
5. Rain Catcher - Why not let us build one of these and have it require like 10 Cloth, 5 Leather, 5 Short Iron Pipes, Brass or Steel Faucet, then we put the empty jars into it and it fills them over time?
Those are all I have for right now, im sure when the slots change for the guns and bikes that we can mod clothes in game with extra pockets and stuff but these are my ideas, I hope some of them sound good to everyone