We certainly don't want to drive anyone nuts with our tinkering and testing of things in progress.
If you're unhappy with the unfinished state of a current build, you can use Steam to roll back to a previous version that's more stable. We save a lot of the old versions to the Steam repository for just this reason.
To do this, Right click on the game in your Steam Library. Select "Properties", and navigate to the "Betas" tab.
Click the drop down box to get a list of all previous versions of the game, and choose the one you would like to test. After that, just close the menu and Steam will download the version for you. Keep in mind, that you'd need to opt back out to get the normal updates for the game after you make that choice.
If you have any questions, let me know.