Would it not be great if you could select a bunch of faces by telling blender a angle.

Let me explain.

Say you created a cylinder deleted the caps and applyed a solidify modifier, you need to select the inner polygons to delete them. Now what if you could use a angle mode when selecting a face, so you tell blender a angle smaller then 90 degrees and click any of the inner faces and it would automatically select all the faces up to that 90 degree angle and no more.

That would be fast and super usefull!, we already have edge split modifier that detects angles so it is possable.

This could be a mode you can toggle on and off.