Basically, everything is said on the title : adding an option that didn't erase the notification after using Android speed answer (you know, the button "answer" that you can add to your custom Textra notifications).
It would be so useful because it was something I used a lot when I was again with Google messages, I used it when I'm in a game like "Among us" to share a code with my friend without leaving the game or else it disconnect from it. So yeah, that's my idea to maybe add into Textra