Feedback on Walking With the App

This is looking better than I expected at this stage, but there is clearly still work to do. I created three routes, by importing gpx files created on Outdooractive. That worked fine. I then tried following one, recording it as an Activity. A few comments:

1) The recording stopped at one point. I don't know why. I didn't press stop, but I was switching between apps, using the phone for different things during the walk. I spotted the problem, started re-recording, so the recorded track now has a straight line in it. It would need to be edited.
2) I was able to use it for navigation, although, one serious limitation, at the moment, is that you cannot see what lies underneath the blue line (route) or purple line (activity). Am I on a footpath? Very important. On OS Maps and Outdooractive, you can see what is underneath.
3) I cannot seem to access, edit or download the Activity. Is that something which will be added later?
4) It uses a lot of battery power. I only looked at the screen for a few short periods but it used 23% of my battery over the 8 hours it was running (this was a 17-mile walk)
5) It didn't seem possible to pause the recording, so you have to leave it running during longer stops. This adds to the battery problem and can produce bizarre patterns on the gpx file when you stop, but the gps satellite thinks you are moving.