You can't add tags to posts so that's out of the question and I don't want to add a beta sub category. These directions will be pinned in the Development - Theme and Plugin sub-categories. If we seem to get a lot of BETA testing threads, I think that's when we'll need to consider having BETA be its own category.
Here is my attempt at the directions which will be in the pinned topic. Should anything else be added? Feel free to copy and paste and change it around to what you think would be the best directions.
If you would like users to beta test your product, please add BETA: to the beginning
of your thread title. Add as much information as possible to your post
such as what you want tested, how long the testing period will be, and
where to give feedback.