I would rather see a -switch for outputting to NUL (or the equivalent of doing so, as far as a script is concerned) for /filter and /debug (not sure if NUL is useful for anything else?) Using NUL seems a bit kludgy.
It seems like it's not actually NUL that's useful, it's just the fact you can /filter to fill $filtered without actually outputting data, and with /debug you can use the -i switch to use a script to act on debug data without actually outputting it anywhere. If those features could be replicated in mIRC then there wouldn't be any need for access to the device.
