I like fab, my sales are better than the marketplace was, the UX is nice(on the website), and they are actively listening and implementing community requests like wishlists, better discovery, better search, soon comment/community threads, etc.
That being said it did launch in a rough state so I can see why some might be upset since in some ways it lacked features the marketplace already had. My most anticipated upcoming features are the fab desktop, video embeds, and the comment threads for products. I don’t really care that much about written reviews, I’m experienced enough to know when a product is poorly designed or hard to implement based on its documentation(or lack there of) but I can also see why devs who don’t read documentation much may not be able to tell and want to rely on word of mouth.