What if the “Close the gap” message could be replaced with a “drag bar” that could indicate the current drag. In steep hills, this bar would not show much impact of drafting, while at high speeds you would see a big impact.
Alternatively, you could have a “drafting bar” that would indicate how much effect the current drafting has on the drag.
It does not have to be a bar. It could be just an area that is changing color, a drag force vector changing length, a gauge or similar.
I guess this is not a new idea, but I just wanted to get it in here on the new forum.