Here's an idea I've been mulling over for a couple weeks, but never really made an actual suggestion out of it. As you may or may not know, Halberds are basically a combined spear and axe. They were fairly cheap to produce and were highly versatile in combat. They have a spear blade at the end of the shaft, an axe blade on one side of it, then a catch hook on the other for pulling cavalryman off their horses. (though that's not really useful from the gameplay standpoint you might say, but I'll get into that later) It also has metal rims down its shaft to block blades, giving it a bit of defensive capability. A skilled halberdier could be as deadly as any other weapon master.
Now, let's get down to what you guys really want to hear, or might not want to here. This is obviously a two-handed pole weapon, so shields wouldn't be all that useful with it. Before you guys all form a lynch mob to come after me, notice how I said that it has the rims along its shaft? You would still be able to block using it, but against melee attacks, not projectiles or explosions. Or, you could possibly have your shield on your back, giving you additional defense there as well.
It would do normal damage for swings using the axe blade, piercing for spear thrusts. For its moveset, I'm suggest a little something unique here. Simply using the attack button with it would make it swing broad strokes using the axe blade in around 50 degrees, having a longer reach than swords, but wouldn't do much damage if it made contact with an enemy with the shaft instead of the blade. These attacks would do a lot of damage, but nothing spectacular. Holding your shielding key while using your attacking button/key will make you do piercing thrusts using the spear blade. This will provide a bit of knockback, and will have a range almost double that of a flourish.
For the charge attack, this is where the catch hook comes into play. Upon releasing the charge, you will grab the target you're currently locked onto or the one that the attack would land on, and force it against the ground using the catch hook and pole as leverage. This will do some damage, but the main point is to make it completely vulnerable to attack from your teammates. While it's in this unfortunate state, it will be incapable of moving or attacking. If this is implemented, which I doubt, they would probably just give it a frozen animation instead of it against the ground. This cannot apply to all enemies, either them being too large or too small, in which case, it will do a moderately high amount of normal damage. Obviously, this makes it more of a team-based weapon, as pole arms should be.
Completely open to criticism and suggestions for how the star-forms would be named or any changes to its behavior. I would make some art to show you what a Halberd looks like, but I have the artistic talent of a rock and will spare you the torture.
Does shielding work like T3 gremlins? They can block from one side but not from all?