I like the idea of the headdresses or special clothing for the elders...that would be neat.

I also like the idea of a workshop for builders to gain more exp points. Once all the "building projects/puzzles" are done...the fixing of huts is not enough to gain many exp. points.

What if the healers after getting to adept status, instead of wandering around like they're lost...pick one of the special flowers/herbs that are on the island and bring it to the hospital to research with or to use as medicine for the hurt/sick. Maybe adding different kinds of ailments instead of sitting down and coughing...building accidents, kids scrape a knee, someone eats something bad from the jungle, researching accidents/burns...
That would be fun and help the doctors gain exp. points a little easier.

The same could be said for the researchers...they could find different items, other than what the kids gather, around the island and do research on them.

Just a few more things that popped into my head after reading Tanya's post.