This suggestion is about customization of items, now we have premaded items and imo this is pretty boring, items should be diffrent from each other, for example some 10mm pistols could be better than others, what more there should be possibility to add additional material while crafting, it would improve weapons/armors and other stuff, i dont mean now stuff like scope or fast reloader, as you all know basic 10mm pistol need 3 junk and 1 wood, if we could improve it with some metal parts/alloys/additional junk then it would inflict some extra dmg or phrepars detoriation will be slower, when we upgrading some weapons it would need a more and better materials in improving process.
Next thing is crafting custom stuff, there should be few things depending on level of proffesion like: Armorer1: Custom Leather Armor, Armorer 2: Custom Strong Armor, Armorer 3: Custom Battle Armor. It would require specific materials and it depend on us what else materials we will use to craft those.
I hope i presented it good enough so everybody will understand
PS: i always write so chaotical ;]