So I was watching a review video of the new Dell XPS 13 2-in-1, which also charges via USB-C. But I noticed one thing at this point in the video. It appears the power cable has an LED in it. One thing that I miss from MagSafe was this simple amber/green LED to know two things - your laptop is actually charging and that your laptop is fully charged, all without even opening the lid. Now seeing the video I'm wondering if this is possible? does the laptop tell the cable that it is fully charged and to change to a trickle mode? I'm sure the charging rate is negotiated at some point, but could someone build a cable with charge status LED's built in? I'm thinking you can, and annoyed that apple didn't do it.