As I scroll down the list of items on my Spending Plan, I'd still like to see the summary of each category on the left.
Part of the value of the Spending Plan is adjusting the amounts to see how they affect the total. I don't like having to scroll up to the top of the page each time I make a change to see how the breakdown has changed. For example, at the end of the month when I release funds from each category, I'd like to see the "$ Left at end of month" grow without having to scroll up each time.
An additional benefit of this feature would be that if I made a mistake while adjusting one of my categories, I could see it right away by noticing the change in the total on the left.