If the data was migrated into a database with a really clean and simple multi-user login, with a view available similar to the spreadsheet, and finally having each user verified against an auth string they placed in their user profile on HN -- that'd overcome the issue with people messing with the columns and more than just their row: -- also emails could be obfuscated.
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Making a entirely new page and transferring the content seem to work.
If the data was migrated into a database with a really clean and simple multi-user login, with a view available similar to the spreadsheet, and finally having each user verified against an auth string they placed in their user profile on HN -- that'd overcome the issue with people messing with the columns and more than just their row: -- also emails could be obfuscated.