More random and more ironman = usually more fun in the long run. It’s just that some people (like me, for example) are afraid of their own courage. When the opportunity to scum or cheese or influence arises, they will do so. Like addicts, they don’t really want to because they know it’s not that much fun ultimately, but they can’t help themselves. ;)
Now, from a design viewpoint the question is basically “Do we help the addicts by giving out regulated prescription dope” or “Do we help the addicts with discipline and zero tolerance”? Both are valid, and if you will excuse the drug metaphor, both are actually used in the treatment of real addictions. You can’t really go wrong either way, but you’ll probably never do it 100% right either.