Text to Speech while ringing

Hello,

there actually is a option to turn on TTS with the actual time, while the alarm is ringing. The alarm rings and TTS says “It is 11 o’clock.” after one minute. Is it possible to add the ability to customize this, so you can edit the phrase and add a little bit more like the actual weather or something else?
I remember that Alarmdroid had it years ago, before I went to Sleep as Android.
That would be pretty nice.
Thank’s in advance!