Player History

So I feel like clans have the right to know the history of the people they are going to accept into their clan. So it would be pretty cool to have player history like how many clan they have been a certain time period, how many clans they leaved in the middle of war, or how many stars they got in a couple of wars before their application. I know many of you won't probably like this idea. How would you, those who like the idea or feel it can get better, improve this feature if it were to be in the game.