I agree with you about the healers and builders, they need something else for them to be able to achieve Master Builder, like a storm and have to rebuild the huts, as far as the healers they need to be able to work at the hospital that we have just built or build a clinic or something.
Also I would like to see more pop=up windows to have to decide what to do, makes the game even more enjoyable to me.

I agree also there needs to be more options on the food sources, like some kind of game or something.