You're right that the Hawaii games aren't that useful (though as part of the deal you could push for Hawaii to play the Big 12 opponents earlier in the day on Saturday, which might help somewhat, could still fill those late night slots that are tough)

But pushing one game in the middle of the season from FS1 to ESPN+ in a week where everyone is watching Alabama or Texas or Ohio St anyway? That's absolutely a worthwhile price to pay for a prime-time game on FOX in Week 0 when there's no other games opposing it.