I have always thought that island events happen far too infrequently but I have never said anything. I agree with bajantara 110%.

It is too late for VV2, but perhaps in VV3, instead of 5 min after game starts and then every 24 hours of game play, perhaps:
after first 5 minutes, then wait 10 minutes, then wait 20 minutes, then wait 40 minutes, then wait 1 hour, then wait 2 hours, then every 4 hours thereafter. only run the timer for island events when the game is actually running. it is annoying to start a game and have an island event in my face. perhaps add a 10% randomness to the time interval.

I think all island events should have a right answer and a wrong answer if there is a possibility of losing significant numbers of villagers, food, or tech points. Fool me once, shame on you, fool me twice, shame on me. In other words, the first time the event comes along and I pick the wrong choice and all my crops die - that's fine. But a good skillful player would write it down and not pick the wrong choice the second time. Making it all random, it does not matter if you take the time to write things down or not, you will be slammed half the time. (granted, some of the current island events do have right and wrong answers i believe. i think they all should.)