A valuable addition to this would be to have the time information for opens, clicks, and purchases available on an individual basis to judge the performance of a specific email or campaign. I would like to be able to discover what times are most effective for sending emails, how quick of a turnaround do certain emails get (e.g. from open to click or from click to purchase).

Determining the effectiveness of an email campaign helps us fine tune our marketing strategies and timing, and the more specific data can be, the better our decision-making becomes

Well..... When looking at the campaign reports, graphs, etc. the time increments are in Months, days at the smallest increments.
As with many reporting charts in our digital world, we'd like to be able to view/track data by hour- especially when determining click through rate at specific time-of-day, and best practices for sending out e-mail messaging.