Been playing since pre-launch (Explorer), got just over 60 hours of gameplay according to Steam. Since then, have only heard Sir Nigel Bicklesworth voice lines once. The DJs order seems to be Ricky Hawthorne, Hayley Von Trowel, Harrison Wolfe, Hayley again and back to Ricky. Tried different maps in case Nigel only appears in one and even played the game a whole day and still no Nigel.

Also, previous games you could pause the game and the music and Radio still played. Museum just goes quiet or gets cut off when opening a crate.