It would be nice to get a handful of official private servers to keep people from server hopping and being able to just ghost into bases. No point in building at the moment.
Weapon wheel set to LB would let you change stuff out while moving. Zombies can catch up while youre trying to pull your melee.
Tents / Fences need to be able to be placed on less flat ground. Can't really hide anything right now.
Hills should take more stamina to run up, and the run speed should be slower. .62 made hiding your tent on a hill a viable option.
The 4x4 should be stronger. It doesn't ride like a 4x4. You should be able to get up lesser hills relatively easily.