I kept forgetting to ask about this until today, but I FINALLY remembered!
Something I frequently did in Mint's Budgets section was drag-select a few months' of budgets at a time, to see how the numbers were flowing for those months/that year, and it would group those months' budgets together to show you the totals across those months.
I'd love to see that added here, instead of just one month at a time.
(I included an example of a version of the Budget page from some iteration of Mint. If you were to click and drag on the months, it would collect them together.)