Also I think that we should be allowed to make characters 5th year and above to have more of a diversity. The older students interacted with each other enough that it shouldn't be a problem. 7th years have to worry about NEWTs as well so there will be plenty to work with.

I agree that as long as we are mindful of the class length ourselves that we shouldn't need to follow a strict schedule that might make it difficult for those who aren't able to be on all day everyday. 

I also agree with a simple strength and weakness chart.