I must agree with you here. I've had mine a few weeks and am still learning tons seeing as it's my first DSLR. The time lapse function is definitely amazing - and battery life far exceeded my expectations.
I have both the 6D and 80D, and love them both. They do serve different purposes for me, as the 6D usually takes care of portraiture and landscape shots. The 80D leverages my 150-600 Tamron glass (1.6x crop factor) for nature/bird photography. I haven't used the time lapse function yet, but look forward to doing so.