I believe that this flow diagram would be greatly enhanced by having a "balance" type of node where you could see the balance at start, balance at end, net incr

I believe that this flow diagram would be greatly enhanced by having a "balance" type of node where you could see the balance at start, balance at end, net increase (decrease) within the popover (obviously the flow in - flow out should = the net increase). Would obviously make sense for bank account, and same for savings account nodes.