Expression review tooltip for Decision items in the microflow

I have a complex validation microflow containing around 10 Decision items. Every checking back the validation expression, I have to double-click on the Decision item, this way wastes time a bit. It could be improved by having a review feature, by just hovering the mouse cursor on Decision and the express will show up just next to the mouse cursor.

Here is an example using annotation, but we have to keep the annotation up to date with the actual validation expression in the Decision item, and it takes place in the diagram.