I’m confident that that’s up next. Getting the base data in house is the obvious priority but once they do, they can start getting users to build on top of that with reviews and photos of points of interest.
There could be a tie in with the Photos app where machine learning identifies photos of food and correlates that with location data for a restaurant to suggest the user share it along with a star rating.
You can call me Nostradamus. This exact implementation just came up in the newest iOS 14 beta.