In SimplePlanes I feel that older blocks like the wing gun or Air to Air missiles have few customization options compared to newer blocks like the single rocket or cannon.
The Rocket pod should have many of the same options as the single rocket, and maybe new ones like a range and # of rockets option
Air to Air missiles should have the option to mount a guardian or intercepter seeker.
The bombs and torpedoes should have a power slider to control the size of the explosion.
Wing guns should have speed and size sliders too.