Just a notice from the sideline, you might have the picture of a chopper with two missile pylons at both sides, however you don't need to worry about the physical layout/design of your vehicle.
If you would have mounted a single larger MML because of reasons over the reasons to have two smaller ones, you could do this as well. The design is not impaired by this decision.
Also (when you use light, medium, large, assault) as description for weapons a lot things got easier - or you need to talk about Laser 3s or Laser 5s and so on