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If you show me another place where I can find the information about the evolution of delegations as shown in this chart then I think its value is not that great. But if it contains something exclusive then I think it is quite valuable.

I advise you to look at the analyses made by the contributors in @utopian-io where they spend hours to provide deep analyses and representation of the data and they earn a portion of what you have attached to this two liner post, which even I could generate in few minutes.