Short and simple suggestion.
Make more Normal, Piercing, and Shadow weapons that inflict status.
The fact that I can pretty much count all the 5* weapons that aren't Elemental and cause statuses on two hands is beyond terrible.
This entire game seems to be built around using weapons that use Elemental damage. Nearly every Elemental type weapon has a status attached to it and the most prevalent enemies are weak to Elemental. There are even an absolutely absurd amount of Elemental weapons in comparison to the other damage types, status or not.
What's with the favoritism?
Why not make the less prevalent statuses (Curse, Poison, and Sleep whenever it gets back in the game) Shadow statuses? Shock, Fire, and Stun can remain stuck on the Elemental weps, but offer more variety!
I can't be the only one who's noticed this or is bothered by this. This game is terribad with balance and its equipment, but it shouldn't be bland and boring as well.
If we are to not consider haze bombs as they aren't offensive bombs, you'll find that there are no elemental weapons inflicting poison or stun. Fire, shock, and freeze are indeed dominated by elemental weapons. Curse is almost left out and Sleep is pretty dang gone.