Console via network socket?

You should be able to shift the Espruino console over with:

var server = net.createServer(function(c) {
  console.log('server connected');
  c.write('Your welcome message!\r\n');
  LoopbackA.setConsole();
  LoopbackB.pipe(c);
  c.pipe(LoopbackB);
}).listen(23);

You won't be able to Ctrl-C out of loops and things though, since the Wireless is handled with the same priority as normal JS code.

With multiple servers, I'm afraid that while Espruino doesn't have a problem with it, the ESP8266 module can't handle it (at least using the current ESP8266 AT firmware - I'm sure they could change it in the future).