I like that we can upload our own models or use ones from other sources to create custom assets with ease! It's easy enough so anyone who has basic knowledge of how Unity works should be able get started right away without having any technical support needed (which isn't always available). The user interface could still look better but it does what you need at this time which makes me happy :) There are no downsides as far as i know since there aren;t many options out yet when using their service - only one way in my opinion would have been if they had allowed us more control over where an item was placed within your scene/game etc.. If someone needs some simple model creation then go ahead because its very cheap compared to hiring another artist / designer especially considering all features included free-of charge such as UV mapping & lighting setups!