Now that cloud allows you to work with sheets (Excel) in the repository directly via Microsoft Online Services, this would be a great feature for editing Simple Table values.

Right now the simplest method is to:

• Download the file
• Upload to Google Sheets
• Edit the values and download as CSV
• Upload the new file

All these steps could be removed if they could directly edit the values using the Microsoft Online Service like you can with a sheets document saved in the repository.