Following the new kustom notification feature, we can now personalise our notification panel, however, due to the notification not being of any special priority, the notification will move up and down your notification list as new notifications come and go. When trying to design a notification that integrates with the notification panel header, this ruins the design.
Allowing to set the notification priority to high or 1 or A or whatever android uses would allow us to have the notification always pinned at the top of your notifications.
Equally, setting notification to low or 5 or F or whatever android uses would allow us to have the notification but without a status bar icon (it would also not show on the lockscreen although you have an option for this already).
Some android versions allow users to change apps notification priorities, however, some don't and some manufacturers remove it from android versions that should support it (Samsung Nougat)