Do we really need another long stabbing weapon to this game, and one that doesn't have a big soft pad on the end like a spear or oftentimes Polearms? Who honestly loves fighting against people with spears? I can tell you as an NPC, nothing hits my neck, face or groin as much as a spear.
Even those who use 1h or 2h swords, do you thrust with them often?
As fun as it is to jump on the "staves suck" bandwagon, they are like any other weapon in this game, if you know how to build and swing/control the weapon, you can be pretty good at it. Some weapons are good against other combinations, some aren't. Staff I find is great against polearms and 2H weapons, but not so much against Sword and Board.
All in all, Staff is fine for what it is intended to do. I would not like to see another thrusting weapon added.
I thrust a lot with my 1h sword, but it has a very intentionally well-built thrusting ti (that gets rebuilt seasonally at the first sign of wear), and I exercise sensible caution in thrusting because we don't require any protective gear.