I'm for the classic suggestion.
Universal Limpet Controller with limpet storage for multiple types simultaneously, separate to your cargo bay.
Limpet storage capacity should be generous, and they should be refilled when you restock ammunition.
Collector limpets should be reusable if they make it back to your ship safely.
I think most players would appreciate that, except for those who see Limpet Musical Chairs as a significant load-out choice for build balancing.