I like that you can create sub-groups within your project team, which helps to improve overall communication throughout the project lifecycle - particularly important during early planning stages. The interface needs more improvements in terms of UX/UI; this would make it easier for nontechnical users with little or no experience using software such as Fireworks to get up-to speed quickly without being overwhelmed by tools available. Some things are not intuitive at first look (the navigation bar seems very basic & does not provide full contextual control). Having several tabs open sidebyside allows quick access to different components, but might feel less streamlined than if there was only one tab displayed. It's very easy to use, it has a lot of features that can be used in different ways, it's fast and intuitive.
The only thing I don't like about it is that sometimes it takes some time to load the page. Also, there are too many options, so you have to learn how to use them all. This software is very useful if you want to organize your work and keep track of everything you do. It's also very good for creating presentations and sharing documents with others.