Passing manual gcode while job is processing

I appreciate the new override for feed rate. My problem is that I am new and when running a gcode file I am still guessing…and I miss the mark usually way too slow.

Now I understand it is streamed, but when I am doing a parallel finishing strategy and it becomes obvious that I need more than a 200% increase, why could I not send a gcode command to update the feed? It would just be entered in the stream just like the current feed rate override.