In Magento the default reports are very limiting. I have been trying to create custom reports that show more information.
I have tried creating a module to recreate an existing report but am not having a lot of success. I know there is an easy way to change existing reports but it involves changing core file and wouldn't give the same flexibility as adding new ones.
If someone can walk me through duplicating an existing report in the local code space then I should be able to figure out changing what information it is displaying.
Ideally the first report I need is one that shows a break down of order totals for each customer group.