I wish there would be more modification options to some weapons and more to choose from. Some of these might be a little too much, depending on what their effect would be.
Predator:
Yautja Bow
-----Regular arrows
-----Explosive arrows (splash damage and one-time-use)
-----Razor arrows (bleed over time)
Spear Gun
-----Scopes
Traps
-----Snare Trap, can only be placed near trees, a snare that will catch a FT member who steps in it, pulling the person up from the ground, hanging the player upside down and forcing him/her to face up to the branch and hold the interact key to free him/herself.
Placing Booby Traps (that slows down FT, i don’t like quick rounds)
-----Medkits
-----Ammo Crates
-----Veritanium
Being able to put Motion Detectors and Audio Decoys on the boars. Also mimik sounds to call for boars, because sometimes they are non existent.
;-)
Fireteam:
Assault Rifles
-----Grenade launcher addon (high explosive, smoke, flash, flare)
-----Shotgun addon
Shotgun ammo
-----Slug
-----Buckshot
-----Dragon’s Breath
Toolkit / grenades to disarm traps
Laser sight for Pistols, SMG’s and Assault Rifles, that could expose lightbending Predators aswell as showing your team mebers what you’re firing at, almost like the AI snipers have, just not as strong.

