Hehe, a crack for a mod, that's rich. As long as you don't enable features that explicitly say EXPERIMENTAL there's no reason not to update.
If you're enabling experimental features, you DEFINITELY want to update, because experimental features are the ones which get the most updating, likely because experimenting found a fatal bug.
Hehe, true. I think the wording I meant was more along the lines of if your not using features explicitly tagged as EXPERIMENTAL you may not need to update, but there's no reason not to. Or at least that wording makes a lot more sense.
EDIT: Though there have been some features which, while marked EXPERIMENTAL, may have not worked perfectly but later updates have made them more broken before another release fixed them to be less broken. The storymode is a good example of it. If you find a version that works fine, you may not want to update at the risk of certain fixes causing other things to break, but since it's beta if your using experimental features you really should have to update so as to find and report additional bugs.