Portfolio graph has improved since the last update but still a long way to go, hence bumping this topic back to the top.
One other issue I have is that you can never see your real growth. Therefore, I believe there should be two lines going together - one is the angle-ish top up line (example below) and the other one would be the existing pulse line. This will explicitly show how well a user is doing.
I have blatantly stolen a nice PensionBee picture from App Store to give some visualisation:
