Unfortunately, I've had to change the estimation date of the release of chapter 5 to end of May, due to the workload I've had on the iOS launch.
In related news, Magium is now available on the iOS App store. Here's the link: https://itunes.apple.com/us/app/magium-text-adventure-cyoa/id1229498009
Premonition was always supposed to be more unreliable than the other stats, since you can't know when it will be triggered. So far it's mostly been something of a poor man's spider sense, but I'm planning to add some more variation to visions, like for example in chapter 2 of book 2, where you can get a vision of Wilhelm betraying you in the arena, 3 days later.
It is used pretty often in the 1st book, though. Certainly more often than say, toughness, or combat technique. You probably just ended up on a path where you didn't really get many premonition checks.