We have built a tool that does exactly this, and it's free for up to 5 users.
You can only modify _existing_ tables, and - unlike the open source hot editor - it will NOT replace the target table, but perform updates / appends according to the load type (eg SCD2, UPDATE, BITEMPORAL). This way the data MODEL is protected, and the data VALUES can be safely modified.
There is a seperation between the edit and the approval, there are data quality validations, and you can even drag & drop excel files into the browser.
The tool was nominated for the 'excellence in innovation' award this year, and we have several reference customers - see https://datacontroller.io/blog
To see it in action, there are some videos here: https://docs.datacontroller.io/videos/
If you'd like a copy, just get in touch with me either here or using the contact form: https://datacontroller.io/contact/
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