I think tridents get shafted (pun not intended) due to few people knowing much about them.
One misconception is that they do less damage than a spear because “more points of contact”, but…you aren’t hitting someone with all the points in a flat contact. Generally the lead tine hits the target, doing the same thing a spear would, and then the secondary tines hit, do a little move damage, and stop the thing going in too far to quickly extract.
Another use case is catching weapons and limbs between tines, and another is that the side tines increase the area of the weapon you can hit with.
So without giving it a special property, I’m not sure how to make it worthwhile.
extra damage on OAs? Grapple or disarm more easily?