Tears of the Kingdom has gotta have shrine equivalents

I’ve been thinking about the fact that TOTK reportedly won’t have shrines and I can’t see how they won’t have some sort of equivalent. 

The purpose of shrines in BOTW was to reward and incentivize exploration. It gave you something to do, i.e., solve puzzles, fight enemies, strip down in the moonlight. If there were no shrines the world would have felt even more empty. 

I suspect that the caves in TOTK will serve a similar purpose. There’s probably gonna be tons of caves littered around. If not the caves, then what have we seen to motivate exploration? If there isn’t anything then that’s a major whiff. What do you think?