Hi, sometimes it is useful to quickly tab through successive geoprocessing runs. You can kind of do this with the mouse, but it's slow and imprecise. It would be much easier to use the keyboard to flip up and down the list while keeping the preview open. Right now, the hover previews do not appear when using the arrow keys, unless you press space on every single one, then space again to close it. My keyboard focus is actually getting lost in this pop-up occasionally; the whole thing is not clear nor easy to navigate with the keyboard. But improving this would not only make the software more accessible but allow you to check, say, the parameters you had used earlier on and find the appropriate one to re-run very quickly. (Renaming and grouping them would also be a big help for this purpose).
Much of ArcGIS pro relies on hovering the mouse somewhere, which is inherently inefficient and this is one of those places it could be improved for navigability, accessibility, ease of use, and efficiency.