Spending/Income over time in "All Transactions" graph panel?

There isn't a great way to submit feature requests to Quicken. If something is broken, you can use the Help > Report a Problem screen inside Quicken, but that's only for things which can be reproduced as a bug. This isn't that. So all you can do is submit an Idea post on this website and hope a lot of people vote for it over time, such that the developers take note and decide to tackle it.

Create a new post in in the "Product Ideas - Quicken for Mac" category and the site will add the bleu box for voting underneath your post. (Then be sure to cast the first vote yourself after submitting your post by clicking on the little gray triangle under the counter.)

In your post, explain what you want, and also explain or give an example how it would be useful doing something you can't do, or do well, in Quicken currently. Sometimes a developer -- or fellow users -- might read an idea and not grasp the reason for it or the usefulness of it, so explaining the how or why or giving an example often helps people understand why a feature would be useful.