Admin Features Sharing by Password
Suggest you allow a host to set an admin password to allow sharing admin rights with another client to ease in RP tasks. (This is not related to the primary server access password.) This password can be privately sent to those you wish to also have admin access.
Secondary feature suggestion related to this one:
An option for the host to allow the admin features to be hacked at a ship command console using a complex and randomly generated/different mathematical solution each time. In such a way allowing users clever enough to use admin features. (The admin can override this control at any time.) Perhaps you can implement this using an engine blueprint layout access looking thing... as in you drag around bits of code in boxes placed in the correct sequence to gain access. (It would be important for it to be different each time to avoid having solution posted all of the internet.)
Just a little mini-game sorta thing to add a bit of fun for those that turn the option on. (off by default)