Mouse-selecting a region of screen to zoom into while playing

[Gronky]

I know there is the "Effects & filters -> Video effects -> Geometry -> Interactive zoom" path to achieve this (which is a great feature), but simply using the mouse to select a region, then right-clicking and selecting an option of "Zoom to this region" would be nice

[ddead]

I have a similar request, selecting a region with mouse to crop. (instead of manually typing px in Video Effects -> Crop)