The War Club is (very likely) widely considered to be one of the least useful weapons for Predators in the game.
I have an idea to improve upon it.
If I am not mistaken the War Club has no secondary attack- this leaves the option open to add something to it. My suggestion is to make the War Club a Predator spin on the historical hand cannon such as what was shown in Deadliest Warrior used by Vlad the Impaler.
The hand cannon function would do some damage, not much- the main point would be to give it a flashbang effect on hit with accompanied vision blur like being hit by the club. Change the wrist blade “spike” out on it which is just an old art asset recycle anyways, and add an actual spike which can be used as a grip for aiming, moving it a bit lower on the club like on a hand cannon. Also make the club longer giving it more reach on swings, more like a spiked kanabo than the stubby club currently in the game. When firing the fire speed and blast AOE should be similar to the Rocket Launcher that was added recently, but with an overheat recharge instead of ammo.
The point of this is to not only add some flavor to the War Club but make it possible to more readily attack a Fireteam target that you catch out of place and away from their squad by disabling their vision temporarily, giving you an opportunity to get in that full combo with the War Club.