Agreed, and yes the existing apps could use a little more improvement first. Maybe Jack's right, search is what they're missing... We've already got some great starts just missing that.
I personally wouldn't even talk much about keys; I'd just show (in video form when possible) an automatic login using a wallet & LN-Auth. Everyone has a phone, this login UX is a great selling point.
I've been thinking about a script for such a video for a while now, mulling it over in my head. Waiting for search to be perfected could take another 5 years though; I need to draw a line in the sand and turn this into video before I get old and gray...