I would like to see two particular features installed in jet transports:
1. A synthesised voice warning of a pressurisation problem if the cabin altitude reaches 10,000 ft.
2. A voice message at 500ft above field level on landing approach which says something along the lines of "500 Feet -VREF Plus 20 Knots" And another similar automated call at 200 ft afl. This hopefully will indicate to the crew that the airspeed is at or above the limit for a stabilised approach. A warning such as this is difficult to ignore and transcends the cultural barrier where the first officer is reluctant to demand a go-around