Thank you so much friend for participating in this engagement challenge and you are very right about all the changes in the rewards systems and their causes and definitely then there is any change in every system then there are some reasons behind them and all reasons and causes behind these reward system changes are well explain by you

I am happy that you talk about duration types which are two isolated curation and community curation we all know and you have also distinguished very well that what is meant by both type of curation and you have also talk about your preference which is the combination of both these but it would be much better if you talk about one of them but over all this answer was valid and good

I advise you to keep much hard working as you are already and keep on growing at this platform and keep sharing such an authentic information as you are sharing still and at last I wish you good luck