The graph on the Platform Insights page show the API usage per day using a line graph. It'll be great to be switch between this graph and "Cumulative" graph so that I can clearly see how many APIs I'm using across the month, and how I'm tracking against my API allocation.

This way, it's easy for me as an Admin to understand if I'm tracking to go over my API allocation for the month and can investigate further (is it a new application? is a current application using more APIs? etc).