I like that it auto-deployed all my packages at once rather than one by one which took me much longer time! It also gave more flexibility with our organization's server configurations (eBay).
Nothing really since its pretty easy tool to use but sometimes when we're getting error messages from API service providers or other issues during installation/uninstallation can be confusing if there are no user guide included for this product available online as well. If your looking for something simple then i think maybe try another solution such as WSO2 IS SOFTWARES because their documentation was very helpful & they do have good customer support too :).