I think Smartsheet is amazing, extremely powerful but simple to use. It is great. I am assuming that this has been suggested before and for some reason has not been implemented, but I think it would be great to add worksheet like tabs to a Smartsheet similar to worksheets in a workbook. Some of my spreadsheets require multiple tabs and it is much more convenient to access all the sheets in one place and easily switch between them rather than having to go back to the workspace and open up a new sheet.