Use case: My app doesn't know how many rows of data the excel spreadsheet will be prior to upload. I've defaulted to my maximum amount of 10,000 which will be normal for some, but overkill for others. The ability to change the number of rows/columns to accommodate the size of the sheet after loading, would be a nice addition. As a workaround, I'm destroying and reloading the widget instance after the initial load.
Please support Excel formulas copy and paste to Kendo Spreadsheet. Now is the copy only the text, not formulas.
Somtimes you just want to give the User a little Side Calc without a full blown Sheet, just the grid with some cells able to change.