The virtual dash was a March 2017 onwards feature so it must have been retrofitted.
I can’t quite remember what exactly was standard in 2016 but I know nav was from mid 2015 when there was a big price hike and possibly winter pack added as standard(?), it’s was a long time ago now!
As yours has leather then it’ll be heated anyway. I think it was about a £1700 option.
Other standalone options from that era were sunroof (about a grand), park assist (£300 ish), reverse camera (£200 ish), extra airbags I think(?), upgraded Pro nav (£lots), DCC (£750ish), 19” wheels (£750 ish) and some other stuff I can’t remember probably.