Hi.
I have an idea to combat this issue with drones locking up/disappearing etc as they tend to do. I think it would be a great idea to have an option in-game (in one of the player menus or similar) to DISOWN or SELF-DESTRUCT a drone that is somehow lost or irretrievable. That would at least allow the player to cut thier losses and put down a new drone. At the moment if something happens to it, you cannot put a new one down as the game thinks theres still one active.