I like that idea too, where you grab your 6 or 7 people and take them to another island.
oooo Make it so you take a few, separate them to go on different islands...IE 4 islands
Get them to find locals, train them and then eventually, trade with the other 3 islands.
That would be a pain to get 4 new islands started, exspecially in real time, having to run back and forth to each island.

Should have more games or puzzles to do. To actually do though. Like, coconut bowling, or fish poker, maybe a puzzle that you have to solve and you get certain tech points for time.
Master builders, Adept builders, trainees should all have a certain hat, or symbol to tell them apart. ooo or color

There's my ranting and raving for the week