I see this being most useful for CC accounts, but it could be useful for other accounts as well. It would be nice if the color of the dots representing transfers could be changed to a some other color than blue (orange?). Right now everything is blue except for income which is green. Ideally, I'd like transfers to be a different color so they stand out better allowing me to interpret the graph faster.
In this screenshot, the projected balance is for a CC and the orange dots represent CC payments.