Hello! I love that we have Proton Sheets for the first time now. This is great as another way to securely save my workbooks in the end-to-end encrypted cloud. There are two features that I would be interested in off the bat that I noticed didn't make it to the initial release.

Past as Plain Text
Other workbook applications have a variety of ways to paste data. I don't see any drop down for paste in either the right click or Edit menus. I would ideally like Paste as Plain Text, and maybe Paste with Formatting (but without Formulas), etc. Just some variety of options in both the right-click menu and the Edit menu.

Sort without Header Row
I noticed that Proton Sheets acts like one but not all workbook applications that when you sort a column, it also sorts the header row that has been stopped from scrolling. I would like to keep my column headers! I do see that uploading an .xlsx file understands my header rows, so it would be nice to keep those up top.