Can we please make a “Select Up/Down”

Can we please make a selection tool version of the "Select Forward/Backwards" but it selects everything Up or Down or Up & Down from the cursor. I've tried to see if that's available and haven't been able to find it and it would be so useful.  I don't want to have to link or group everything.  I don't want to have to mark in and out and do it that way cause it's too time consuming. Tired of having to drag up or down and make sure I didn't miss anything when I want to delete a segment. And when I do drag often times it will deselect stuff at the top or bottom when I drag past the window. (If that makes sense).  Can you at least make it so it doesn't deselect stuff that I've already selected just because it's no longer visible in the window.