I'm a frontend developer and my experience with the backend is more just Firebase. I really like the Netlify feature, where I can add a config to the project and a button: "Deploy Own". Netlify puts up an instance of the project, asks for environment variables and the user has their own instance of the application without open up the console.

[bokamix]

I am doing an open source project. I'm very keen that a user should be able to put up my application in as few steps as possible, and that he doesn't have to have specialized knowledge to do so. I am using InstgantDB where he can enter the keys to his project and paste the schema and everything works, without any configuration.
A feature that would do something like this would be nice. I can export and import the entire project (without the data) into a file that I can share and someone else can install that project by simply pasting the appropriate keys into .env. Such a one click setup.