Old school Ultima Online like Crafting menu in Wasteland merc 2. You will need repair and science and doctor skill to craft all kinds of items. The more you got in those skills the more items you can make. Outdoorsman skill will be used for mining ore and for cooking food, food is also used for healing instead of stimpaks.
This will force the player to raise skills that arrant combat oriented or he will run out of food, ammo and drugs pretty fast and he wont get any advanced weapons or armours if these skills are low.
Go in to the gallery of this mod to see screenshots of the crafting menu.
That's an amazing addition to your mod. Very cool.