I have noticed there are some /u weapons that dont exist, and could easily exist. I will provide some examples below in hopes that Bob or someone sees it and decides it's a good idea to add.
A rank sword: Use Forging Hearts for core. Options: Forging Hearts/u +5% PA Damage, Zantetsu/u +8% AR (Already has a notorious 129% Range, so it could be an amazing filler for range on A rank swords, could use same attack/accuracy stats as Forging Hearts. Zantetsu is one of the coolest sword models in the game and could use some love!
A rank double Saber: This one would be tricky as there are currently no A Rank PA Boosted double sabers that drop naturally, but it would be cool to add a new A Rank saber that is weaker than shippudotoh and has a PA boost. Could use one of the old models that players like like Pretty Baton, or Nyoibo. Would be nice to have an alternative for A ranks to shippudotoh.
A rank Bow: Perhaps give Metal Arc Bow an inherent 10% PA Boost, since it already has decent stats, and make a /u version with 5% PA Boost
A rank Twin Pistols: Twin Heaven Avenger would be an amazing candidate here, to complement classes that cant uses Twin Heaven Strikers.
A rank Card: Another addition that would be nice
A rank TCSM: This one is a HUGE one for me. Currently our only option is sunriser, which is an ATP boost. We already have Nidra with a built in PA Boost of 10%. Could potentially bump it to 20% as this would still make it MASSIVELY weaker than sunriser (970 TP vs 566 TP), and then have a Nidra/u with 5% PA Boost or 200% SE Boost.
I hope this gets some love, because not everyone has billions of gold to throw around on custom weapons, and it would be nice to have some /u alternatives to custom weapons in these categories. I know hardcore players would probably appreciate this alot too.