I like that it is easy to use, has great documentation, can work with different file types (PSD/Sketch). It's fast! Very responsive when you need help or have questions along your way through design process. Nothing really at this time but if there were more options in terms of customization, maybe an option could be added so we don't lose our files while working remotely? This would save us from having to email back & forth everytime someone makes changes which takes up valuable hours each day. If you're looking for something simple yet powerful then definitely check out plant as they've got everything covered here. We are using it mainly for PSDs because we do most of our designs digitally however sometimes clients will send me their Sketch Files too.