Just go and use Android or other Android like OS if you want something like that...
Have you considered that doing something different is not ignoring anything.
As for intuitive this is relative to what people have used before.
People will have there own personal and group goals for these FOSS projects. Just because they don't align with your vision of what you believe should be done, doesn't give you the right to complain other people are wrong. It contributes nothing to moving forward.

To progress further with the initial flashlight idea, controlling the flash directly appears to work fine in the following way.

#!/usr/bin/env bash

flashOff() {
	printf '%s' "0" > /sys/class/leds/led:torch_0/brightness
	printf '%s' "0" > /sys/class/leds/led:switch_0/brightness
}

flashOn() { # 2 appears to be the minimum brightness value possible
	printf '%s' "2" > /sys/class/leds/led:torch_0/brightness
	printf '%s' "1" > /sys/class/leds/led:switch_0/brightness
}

So with a loop I can have a nice flashing pattern at the minimum brightness.
Just need to find what to hook into so I can have it only running only while there is a green notifications icon.

As for using the screen, I think the green envelope icon, possibly slowly moving along the top edge of the screen (to minimise any burn in); would be a nice option there.

Just a quick post for forum lurkers that updating to 24.04-1.0 stable on Fairphone 5 has gone smoothly for me.
To install use the ubports-installer select stable and leave the wipe data unchecked.
Then do reinstall all apps from the system settings menu.

Issue with Libertine is resolved only thing I have seen an issue with is OSM server not starting for Pure Maps but I haven't tried debugging yet.

@knuddel823 It's recommended to install Fairphone version of Android 13 as per the install instructions.
https://devices.ubuntu-touch.io/device/fp5/release/noble/#installerDownload

Run the installer, it should detect your device and then use the option to reinstall but don't tick the wipe personal data option.

All notifications are affected.
The current options are wait for it to be fixed in stable or switch to daily.

Comparing with flashlight on and off.

Off
/sys/class/led/led:switch_0/brightness = 0
/sys/class/led/led:torch_0/brightness = 0
/sys/class/led/led:torch_3/brightness = 0

On
/sys/class/led/led:switch_0/brightness = 1
/sys/class/led/led:torch_0/brightness = 127
/sys/class/led/led:torch_3/brightness = 127

I'll need to test if changing these will trigger the light, certainly just making switch_0 = 1 doesn't work.
Not sure if this is the correct way to interface with these.

As for monitoring for new messages I'm wondering if dbus-monitor could be used...

@t12392n
I can confirm this too.

This is a workaround that I have been trying for a little while.
Try constructing the message then switching airplane mode on then off before sending.
I read something similar on another post and it seems to work for me so far.

@gpatel-fr I believe you are experiencing:-
https://gitlab.com/ubports/porting/reference-device-ports/android11/fairphone-5/fairphone-fp5/-/issues/37
Which I occasionally have had on the current stable version anyway.
You can force it to happen if you play with the Network toggle buttons for a bit but in my general usage I find it's rare to trigger this bug.