GlassWire uses a driver so it's more complex than software that does not use a driver, so we worry releasing a snapshot could cause system instability. I think in GlassWire's case it doesn't make sense to do a build like that because users would crash frequently and become upset with us.
We prefer to run any new updates through our Quality Assurance group before releasing them.
We do have a testing group though so if you'd like to email our contact page with the subject "testing group" I can add you to that list. Thanks!