I did foresee the question about my change to the gunmetal spear. The original uses a piece that is very unbalanced. That’s why I particularly mentioned “balanced” as an issue, because spears can become uncomfortable to hold if they are not so. To change this, I centered the support spine through the blade and elongated the spikes a little, so as to give it this more balanced feel.
To the point of glaives being considered spears, again we have the ambiguity of Bionicle’s use of names to thank for this. While glaives are their own defined weapon in real life, by Bionicle’s standards it can act like a spear and would likely pass a spear-qualification test.