Selecting layers is one of most painfull things in Photoshop from webdesigners point of view. And it is one from reason why I will no longer using Photoshop as main tool for webdesign after winter 2017.
I don't know if you feature is solution. I can't properly imagine it. There is more issues about selecting.
https://feedback.photoshop.com/photoshop_family/topics/selecting-layers-by-dragging-does-not-reflect...https://feedback.photoshop.com/photoshop_family/topics/fix-autoselecting-clip-mask-layershttps://feedback.photoshop.com/photoshop_family/topics/photoshop-cc-2015-5-1-jeff-tranberry-or-anyon...https://feedback.photoshop.com/photoshop_family/topics/unlock_the_locked_layers_within_a_selection_y...https://feedback.photoshop.com/photoshop_family/topics/cant-use-a-shortcuts-to-scroll-through-the-la...https://feedback.photoshop.com/photoshop_family/topics/alt-click-on-triangle-in-layers-unexpected-zo...- You can't select layers via draging if your layers are filtered and draging starts inside canvas
- Sometimes you need click one pixel above or below line which is 1px thin vector shape
- If you apply color adjustment filter on smart object, save and re-open document, then layer bounds are same size as canvas and any selecting layers with draging selects these layers, so I am not using these filters
- Selecting with draging doesn't select parent folder if all childrens are selected which is really messy if you duplicate or deletes layers :-D
- If you use "step backward" then you need reselect all your layers it was fixed for undo/redo but I don't use it because I need more steps
- If you have many selected layers
- If lock artboard with "move-lock" you can't select path/points of vector shape inside artboard but you can do anything else with content inside
- If you have shape inside arboard "A" which overlaps outside into another arboard "B" , your selection inside arboard "B" selects layers inside "A"
And some more