Thanks for the idea!
In the meantime i managed to throw a module together.
It listens to any notification and sends notifications plus payload after a delay. If anyone finds this post, here we go:
MMM-DelayedNotification

Hey guys,

I am building a MagicMirror with MMM-Framelight and a Button via MMM-GPIO-Notifications.

My goal is to send the notifications FRAMELIGHT_ON followed by a delayed FRAMELIGHT_OFF to make everything dark again.

How do i realise this kind of delay? Anyone knows a module with that functionality? Or can point me in the right direction?

Thanks for any help!