The problem is the number of parts overall. 383 for OneHanded alone. And the majority of them have exactly the same stats.
I will give you an example. I play Sturgia mostly and Vlandia from time to time.
For Sturgia i need 10 parts in total. 2 for OneHanded Axe, 2 for TwoHanded Axe, 4 for a Lance, 2 for a javelin.
For Vlandia i need 10 parts in total. 4 for TwoHanded sword, 4 for a Lance, 2 for Throwing Axe.
10 parts out of 1201? less than 1%. My chances to get what i want are minimal.
The overall need for parts for weapons will be no higher than 20 TOPS. I don't care how the weapon looks, i need a tool which means all i care about is functionality.
I ask you to simply understand the frustration RNG system cause. I took me 9 hours straight to unlock the parts i need. And last two parts i only managed to unlock almost at the very end. 1201 parts in total in the game, i understand all of them are assets i understand all of them are man-hours. But it is simply frustrating because my Smith hit 330 long before i managed to get all the parts i wanted. Not to mention additional levels for him and the supporting companions.
If i will decide to run Vlandia in 1.6.0 i will not engage in Smithing at all, because i don't want to and will not go through the process of unlocking all the parts again. Smithing is basically dead for me as a feature of the game.