Hi, I couldn't see this suggestion posted elsewhere, so hopefully this isn't a duplicate!
Essentially, I think it would be great if we could control the section/selection box from corner - rather than side - grips.
In general, this would be useful for anything parametric with grips, though I realise - constraints depending - this isn't always a viable option.
In any case, resizing the section box from a corner point is just so much faster and convenient than using the side grips. I understand it may not be so easy from an angled perspective (though still possible), but it could perhaps be a dynamic option that corner grips appear only when viewing in plan or parallel/perp to the box faces.
I'm mostly modelling in 3D, notably using point cloud, so there is a constant need to be flexing the section box to what is relevant... essentially I just want to half my clicks, obviously therein doubling productivity! 😉