Enhance console by a new key to clear line and echo off in one go

When connecting to Espruino programmatically I send for example
'\x15\x10echo(0);print(E.getTemperature())\n'
This works well, but besides looking a little ugly it is a big waste when connected over BLE.

If the were a key, say \x1f, that makes jsiHandleChar

1. delete the current line like Ctrl-U (\x15)
   
2. turn echo off permanently until re-enabled by echo(1)
   
   

the command sent became '\x1fprint(E.getTemperature())\n'.

This saves 9 bytes (almost halve of one BLE packet's payload, and probably a little overhead for parsing and interpreting the echo(0) call.
Is this something to consider as an enhancement?

Regards, Steffen