[Erax]

OK, here's my suggestion for Nuclear Warheads :

Proton Torpedoes I-V : Physics 1 + Missile Weapons 1-5 + Torpedo Weapons 1-5

Concussion Missiles I-V : Physics 1 + Missile Weapons 3-7 + Torpedo Weapons 3-7

Small Proton Torpedoes I-V : Physics 1 + Missile Weapons 1-5 + Torpedo Weapons 1-5 + Smaller Weapons 1-3

Small Concussion Missiles I-V : Physics 1 + Missile Weapons 2-6 + Torpedo Weapons 2-6 + Smaller Weapons 1-3

Heavy Rockets I-III : Physics 2 + Missile Weapons 3/5/7 + Torpedo Weapons 4/6/8 + Smaller Weapons 1-3

Space Bombs I-II : Physics 2 + Missile Weapons 5/7 + Torpedo Weapons 5/7 + Smaller Weapons 2-3

Devastator Torpedoes I-III : Physics 2 + Missile Weapons 7 + Torpedo Weapons 8-10

Flame Carpet Warheads I-II : Chemistry 1 + Missile Weapons 7 + Torpedo Weapons 9-10

Another alternative is to extend the Missile Weapons tech area out to 10 levels and not require Torpedo Weapon research.

What do you think ?