Here’s my dream functionality for glide.
Native form within glide attached to payment button (purchase a non tangible item) - users fill out form, not submitted to google sheets until payment made, happy with stripe and or Paypal.
The app being public (no sign in needed) with option to subscribe (to contribute) subscription can be free or paid, paid monthly or yearly.
Once subscribed the user can add, edit, delete own items. All items added by subscribers can be seen by everyone.
Admin can be granted by app owner to anyone.
Not sure whether my expectations here are too high?