I try to include at least two types of actor loadouts in each preset to include all of the content in my mods, but the only instances where the presets are used are 1) when units are automatically spawned in bunker module assemblies, 2) when the AI deploys units in
metagame and 3) when the player chooses to use one.
AI using loadouts is only tied to the metagame (afaik) and most other scenarios use different methods of unit deployment, such as randomly picking light & heavy units and giving them a random primary and secondary weapon + other stuff like grenades, tools and shields, so you shouldn't bother yourself with the loadouts that much.
That said, if you're making a full (balanced) "Tech" (for metagame use) and you can't fit all your weapons in the loadouts with an average of 2 actors per loadout, you have too many weapons in your mod.