Joineries in their current state have what I'd call a bit of a Railjack problem. Looking at the other 'frame game, there are three tiers of ship equipment. However, the first two are (from my experience) almost always skipped over and used for nothing but scrap. The reason comes down to three factors working together:
- The higher tier option is always better and competes for the same slot.
- The higher tier option is immediately accessible without much effort.
- There is a significant crafting cost that disincentivises players to "waste" resources on an inferior version.
All this is true for the joineries as well. It's really not that hard to grind up for a polished/blessed joinery even with starter equipment and the resource squeeze inherent to starting out in the game means that I can't imagine too many folks out there will be paying the price to recraft their weapon with a lower-tier joinery.
From my non-game dev perspective, fixing this issue requires that any three of the aforementioned factors are out of the picture: either having the higher tier joineries provide specialization instead of raw power, making them more of a mid-late game goal, or just messing with the costs of reforging.
The Polished/Blessed distinction is a great example of the first option in action: the Blessed joineries are rarer, but provide a benefit of changing the weapon's virtue as opposed to just being better, so both tiers are desirable.