See iNat staff @alex comments on iOS button here as well as the broader recent discussion which connects to your topic.
I like the idea of a review ID prompt and would vote for it. Though I could also imagine text to be a potential source of confusion (like the disagreement prompt atm). I agree graphical solution could be better. This was one visual solution from same thread thinking along similar lines…
There is also an older related feature request and discussion about making withdraw button more visible on browsers here.