Ability to set appSettings and connectionString values that don't exist already
I make extensive use of appSettings values in my app, but I do not want to include every single value that can possibly be set in my source repository. I would like Octopus Deploy to allow me to set appSettings and connectionString values that will get inserted into the config if they don't exist already.

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Tom Rathbone commented
Yes, this would be extremely useful! Be great to have either a way to select additional variables/settings to insert or a way to inseert all available variables would be fantastic.
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Brian Vallelunga commented
I agree, this would be very useful. I often need to include multiple connection strings for multi-tenant environments. To get around this I've first created an environment config transform that adds the connection strings with blank values and then set the variables in Octopus to override the blanks.