Guild Wars 2

While Anet has mentioned plans to create new weapons, this is understandably a daunting task; on top of creating and balancing entirely new skills and animations, you’ve got dozens of new models and skins that must be provided with them all at once.

At least some of that could be bypassed by allowing some weapons to be used both above and below water. I’ve also seen complaints about interesting, hard-to-get skins that are then never seen because they’re confined to such a small part of gameplay. Spears and tridents (which, let’s face it, are just spears) are some of humanity’s oldest weapons, and some sort of polearm-type is exactly one of the weapon forms missing in terrestrial combat.

The main problem I’d see is how transitioning would work, since you’d either need to change the current mechanic or require someone to equip two spears to wield one both in and out of water. But, that seems like a smaller technical problem than the effort that would be saved utilizing all these mostly-ignored spears.