Preserve charts when rows are deleted
I often used graphs (aka "charts") to observe where data in large data sets is out of range. The problem is that if I delete bad rows of data, the chart gets deleted. [I do not know if this is intentional or a bug or a bad setting somewhere] Since the chart uses absolute references, there does not seem to be any reason why this should occur.
Another way to make this easier is to have the user be able to create better graph templates, so that the data could be quickly reloaded and observed.