More reporting options. There is a wealth of data able to be reported around just one Facebook page; now imagine the type of data you have available to analyze across dozens, hundreds, or even thousands of local pages. They already do a good job of showing some valuable insights (and providing every other metric they can via spreadsheet exports) but I think there's pretty much an endless array of possibilities beyond what they have. I suppose that's a slippery slope though.
Some minor UI/UX issues. Some fields operate weirdly, some buttons may act funky, or the platform may not remember your location group selection when you move from one part of the product to another. Easily overlooked, however.
Social media publishing is sometimes delayed and may go out a handful of minutes after you intended. Not a problem in most cases, but I'd schedule natively or with another tool if you're depending on a post to go out at an exact moment.
I have not personally used Yext, but after a couple demos I didn't find that it fit the needs of my past clients or current company as much as MomentFeed could; I had also heard horror stories about how Yext effectively holds listing data hostage or simply removes it once you are no longer a customer.
