The way I’ve done this before is to use the url placeholder to have e.g. an env parameter that I use to determine the environment. Then create an app variable for that env parameter that you use in every data flow. Like that you can easily switch the app variable in the login flow for example and affect all data calls in the app.
Yeah it’s definitely a pain to do afterwards if you didn’t have it in the plans to do in the beginning, but at least once it’s done it works well
I’m not really able to give time estimates – but as far as I understand the integration features are going to apply to start with to SAP integrations, and as such it’s not going to be useful for non-SAP integrations when the feature is first released.