In the past there was an ability to redirect to a auth URL during the install. but it was reduced to the scope approval without redirect to set up the app.
Please bring back the ability to at least redirect during the install process, with an install abort_back_to_url in addition to the regular back_to_url.
It is necessary so that the installing user can do the following:
Agree to terms of service
Agree to the privacy policy
Opt-in (eu) or opt-out (us) to/from telemetry collection.
If the user declines the terms of service or privacy policy then we can redirect to the abort_back_to_url where install doesn’t proceed.