I tried out time lapse (every 30 seconds) over the weekend which worked well but I still had a few issues
Battery saving - I assume there is no battery saving with time lapse because my battery died after about 2.5 hours. Are there any plans to allow it to go into sleep mode between shots?
GPS track - The GPS track doesn't seem to work, though this seems to be being worked on - https://forums.garmin.com/showthread.php?71348-Time-lapse-and-GPS-ANT-data-synchronization&highlight=time+lapse
Slo-mo - The video is great but it's a little fast (11 seconds for 2.5 hours). Is there a way to slow down the video before publishing?