I have been having pretty minor ideas on having a heavy piercing sword added to the game. Every other damage type has a heavy sword; Triglav for normal, Gran F. for shadow and DA for elemental but nothing for piercing. I would love to see a Piercing variant for one of the heavies. The amount of piercing type swords are lacking as well - the only ones being the 3 flourishes.
I just brainstormed some ideas of how the sword would look like. It would look a bit like a Khorovod mixed with the shape of a node slime crusher (however without the "slime" look) with small teeth going down the edges. (not literal teeth, but very small spikes/grooves if you get the idea) Now, after picturing that sword, add on a patch of fur running down the middle embroiled with jewels and tooth necklaces, which could possibly move and jiggle around as you slash. I also don't want this sword to look like a piece of the Snarby set. I was thinking more along the lines of the Skolver set.
The charge would shoot out 1/2/5 (unsure on this part - want the number to differ from the GF/DA) thorn-like teeth (or something along those lines, just has to be pointy) that snake in a straight trajectory and have pale yellow lines that follow the projectile in a helix fashion as the projectile spins around. The projectile would travel pretty much the same speed as the gran faust/avenger.
The basic attack would have pretty much the same 2 hit sword style and look; just recolored to match the overall color and theme of the sword. Maybe a wolver noise after the second strike? Not sure.
I would make a picture but it kind of seems like a bit of a waste since this idea may get pretty bad receptions (it is a pretty big addition to the game after all) but anyway, hopefully this idea will get some good reception/critique. I, myself, have mixed feelings about how this sword will work out.
A heavy piercing sword needs to have more piercing and less blunt trauma. Adding spikes to a heavy sword doesn't make it just stop being a heavy sword.
In my eyes, we have two versions of piercing-like attacks right now: Stab and slice. Stabbing is the two attacks after the first of a flourish, with a slice being the first swing. For a heavy sword, we can have a strong stab (thrust the sword forwards into the enemy), and then slice upwards. This could be a strong single-target-damaging sword.
If you want piercing and crowd control, I don't think that's the best idea. Both enemies weak to pierce are always all over the place, so single-target swords seem to be the best way to deal with them.