Why don’t TVs indicate which HDMI ports that are connected?

I think there's many things that a TV could do to help me switch to the desired HDMI input, for example:

• When I insert a cable, temporarily show a text saying "HDMI 4 connected".
• In the input selection menu, indicate which inputs that have cables connected to them and/or have an incoming signal.

Why have I never seen a TV with these features?