I've been running a new sandbox campaign since the last hotfix and I have some feedback.
1. When more parts get added, it would be nice to have some default unlocked parts for all weapon categories.
2. The random unlocking of parts adds some nice variety every time I want to roleplay a clan of arms dealers. I wouldn't change it.
3. I get some hand pain after repetitive clicking. If the smelting or refining interfaces get any more updates, item transfer sliders such as the ones in the trade and inventory menus would speed speed the interface up, reduce hand stress, and make it less repetitive.
4. The smithing perks still have a very optimal path for maximizing value, profit, and parts unlocking. As a player who wants to roleplay a smith, it feels constraining to choose other paths. Some further info as to plans to rework them would be nice.
Overall I love the crafting update and think it greatly improves the system. I know people want armor crafting as well, but I understand the interface changes and clipping issues need a lot work. Hope you are having as good a time making the game as we are testing it.