So i would like to request two features, first one is a listener function for lan that fires when a new signal appears on the circuit network and the second is a cheap wlan receiver entity that will take any signal/signals sent to it and forward it to any circuit network it's connected to

oh yah, also an entity that takes the signal on any network it's connected to and sends it to a specific computer

Hi,
If I understand well on request, it is already possible to do this type of system:

A lan listener function

function myMfct()
--[[ do something ]]
end

function lanListener(callback, oldSignal)
  --[[ Get signal input ]]
  local newSignals = lan.readLeftSignals()

  --[[ Check your change condition or other tests ]]
  if valid then
    callback()
  end


  --[[ Wait next tick ]]
  os.wait(lanListener, 0, callback, newSignals )
end

lanListener(myMfct)

For the other two points, I think make a wlan connector controllable by one or more computers (the only possible configuration being to define a label, because it would be a passive connector and not active)

Currently I am very busy, but as soon as possible I will work on this improvement. (The longest being to create the design)