Every loadout can consist of one primary, one secondary, one special and up to two mods. Weapons, tools and mods have an energy value, and the maximum amount of energy in a loadout is 15. So the loadouts would be more balanced, the more powerful guns need more energy to use. the energy also effects the block amount in the loadout.

The amount of blocks in a loadout depends on the spare energy amount, the less energy your loadout uses the more blocks you will be given on spawn, as well as the maximum amount of blocks you can hold.
The formula for the block amount where n is the energy amount: (120 + n * 50 = amount of blocks given on spawn) (400 + n * 50 = the maximum amount of blocks you can hold).