We tried a few W3G matches at Tater Hill a few years ago and even had the bonus targets made for it. We hoped it would draw more shooters to our small program and maybe give us a little something different.. All that came were mostly are small group of regulars, The serious SASS shooters complained about it messing up their timing. I thought it was fun.
We had several Wild Bunch matches before WB became official, but they did not catch on either. The shooters were so concerned about brass recovery it took forever to shoot a match. We switched to doing a .22 version of WB match and we get at least a few shooters. The last one I wrote with 20 pistol shots on a few stages was right out of a club's real WB matches. The shooters expected the usual 10-10-4 round count of a regular cowboy match complained about too many pistol rounds. At least we did not spend all day looking for missing brass.
Times have changed. None of the real competitive shooters want to shoot flying birds or shoot a Texas star. Even the simple shotgun target which pops up a clay slows down a regular match, but would add to a W3G.
If I knew I could draw some shooters, I would work to get some dates and put on W3G or WB on a regular basis.