Amazing game, fun, 5 stars. One criticism is the lack of a quest journal. For example, when I gather the 3 people, I forgot to meet back at the well and had to run around to find the final meeting place. Same thing with planting the herbs, if only the directions are always accessible in a journal.
There is, in fact, a quest journal in your inventory. And if by planting herbs you mean the powerlines test, Tiali is happy to repeat the instructions when you talk to him.
This is a great game! I normally play games where you use almost the entire keyboard, but mouse-only games like this are great too if you make them interesting, which you did. My only recommendation would be that you should be able to switch team leader during levels (space bar or something). It would make the current game easier, but I'm sure you can make it more challenging to accommodate this feature.
There is, in fact, a quest journal in your inventory. And if by planting herbs you mean the powerlines test, Tiali is happy to repeat the instructions when you talk to him.