Weapon upgrades, Ammo Types and Customization Rules

Let's start with rules. No more than two upgrades per weapon, and no more than two weapons per player. Ammunition is ranked weakest to most powerful.
Listed next to ammo is the limit of cartridges in a magazine before it starts to cost additional Orbs.
EX: Default Ammo Count (Amount for another round of ammo, max count for ammo).
Ammo types: (One handed guns)
.32, 8 (12 Orbs, Max 10 )
.45, 9 (60 Orbs, Max 20 )
Shotgun Shells 2 (120 Orbs, Max 5 )
Plasma , 50 Shots (Burst)
Laser, 25 Shots (Semi-auto)

Ammo types: (Two handed guns)
5.56, 15 (120 Orbs, Max 30 )
7.62, 15 (140 Orbs, Max 30 )
Shotgun Shells 8 (160 Orbs, Max 16 )
Plasma, 80 Shots (Burst)
Laser, 90 Shots (Stream)

Upgrades:
(One handed weapons)
Plasma Injection (Armor Piercing)
Full Auto
Laser Sight
Scope (2x Mag)

(Two Handed Guns)
Plasma Injection (Armor Piercing)
Double Magazine
Extreme Rapid Fire
Laser Sight
Scope (6x or 12x Mag)

(Meele Weapon)
Plasma Blade (Armour Piercing)
Lightweigt Parts

Should'nt there be some more melee ubgrades like a packing feature... or paralyzing electric feature... or something else??