I_Am_Beta has definitely got the right idea. Horses and amputation.
Rick rode a horse into Atlanta, we need some of that going on. The current safe zones such as Hilltop, Alexandria, Kingdom and Sanctuary are all using horses as main transportation. Ever since reading the comics, I've wanted to ride a horse in The Mining Dead (seeing as I can't ride on in reality, I'm allergic to a lot of stuff lol).
Amputation and number of hands required to use a gun would be neat. To amputate, shift-click with a sharp melee, like an axe, machete, knife, katana, etc. If you cut off your arm, you can only hold one-handed guns, such as:
-Pistols:
-M9
-Glock 17
-Colt Python
-Desert Eagle
-CZ-P09
-SMGs
-UZI
Those are the only one-handed weapons. So, 6 weapons in total. All other weapons require two hands. One-handed melees include:
-Knives (Combat, bowie, dull)
-Hatchets (Metal & Wood)
-Spears
(Am I missing any? Call me on it and I'll change it)
I think shovels, machetes, katanas and axes ought to be left out of this list. Sure, Michonne has used 1 hand with her katana before, but she mostly used two hands. Machetes and axes, kind of the same principle.
If you were to cut off your leg, you would receive a slowness II effect. There is also a chance of an infection if you cut off any limb. More infections would be neat, as well.
Ideas for infections:
They become very dangerous, because they can't be healed with bandages. They can only be healed with antibodies, and there is a 1/4 chance that it will work. Make antibodies rare and unavailable through [/shop].
An infection still has 5 stages, but only four stages keep you still alive. The stages last longer, each about 3 minutes. The final stage lasts about 1 minute, then it kills you.
New weapon idea:
Famas G2
(This may not make sense, bear with me). The M14 is kind of a cross between of a sniper and assault rifle. Decent fire rate, damage, and clip size, it makes a good weapon for enemies both alive and undead. The Famas G2 is also semi-automatic, but has 30 rounds instead of 20 like the M14. A Famas would probably go under assault, but maybe move the M16A4 to Special category? It is the only weapon that fires in bursts.
Essentially, move M16A4 to Special, then put the Famas in it's place.
Sorry for super long thread. Peace out.