I can add that mode to other WD sites too.

I think you should post to the wsprnet.org forums that many are listening on 80M or there will certainly be no transmitting stations.

Now that you mention this subject, I wonder if FST4W-120 might be useful on the SW bands.  On the many top spotting sites with extra CPU power, I could easily add  ",W2:F2" to their schedule to have them also search for FST4W-120 transmissions.