I agree that the "work-in-progress" releases work very well for Zibo and his 737, however with a payware product, it works less well. People expect a 100% finished product on release day, and that is why the previous releases of xEnviro got such poor reception - they still had many bugs and had the team not been pressured into a release, these would have been fixed.
However, this issue is not up for debate. xEnviro 1.10 will be released when the developers feel the product is ready, no sooner.