On Tuesday, 20 April 2021 at 09:57:41 UTC+1, JohnP wrote:
Pet hate is the back box for sockets and switches. The way of cramming in
the cables is crude. Especially as if you change a fitting the termianls
can be in a different configuration.

I would like to suggest - for your views!

The circuit cables attached to a terminal block that is a part of the back
box. The switch or socket would be connected to that block with a fly lead
that would be an integral part of that switch / socket with a Wago type
connector.

Any sympathy for this idea?

I cannot see that coming but there is potential for Wago type connectors on double sockets. I have seen a video of someone who mocked up one just as a demonstration. Light switches, single sockets and other 1-gang accessories could be problematic to fit in existing back boxes and that is where the real problem is in backward compatibility.

Richard