2. Crafting experience is unbalanced. AK-112 what takes 110 minutes of cool down gives you 210 experience points. I know it's only an upgrade, but instead of making it you can gain more experience producing 500 pieces of 10mm ammo. Constructing advanced weapons in safe environment gives you more experience than hunting death claws in caves or floaters in a desert. For me it's much easier to level crafter than fighter.
If you want to make enemies, try to change something.
Each time a 21 kills another he gains X and the other guy loses Y, where X<Y (to stop gangs killing each other from XP profit). Then you would need something like TC to act as the "imput" for this extra XP.