I would like to propose the possibility of adding colors to the rows and columns
Right now you can't highlight / distinguish a column in any way. And that could be useful if you work with many [especially thin] column, with similar data [for example I use the different columns for years]
And the rows have only two colors [unaffected by themes of Windows 7]: white and light grey; which only help a little. Why can't the user decide if it should be white and dark grey? Or white + white + grey? Or white + light grey + white + dark gray?