The ability to be able to publish our mobile applications in multiple different stores with ease of use! We were not using any other app store management tool because we are only focusing on publishing so this was perfect for us.
I would say it could do more integrations but maybe they have already added those features or at least consider adding them if you don't currently offer such an option? It's been great being part of their team as well. They're very responsive and easy go get support from when needing help through chat / ticketing systems etc.. You can literally reach out directly via email (which i've done several times) however there may sometimes take time before someone responds which isn’t ideal especially given how quick response some companies need these days due to competition/ demand issues.