I like the customizable Gantt chart which allows us to see projects over time in a way that our senior management can easily understand and prioritize.
I like the flexibility, you can easily adjust timelines on the Gantt chart and even add in new tasks. As a user from an organization implementing various projects, I also found the option for viewing different projects at once very useful especially when you are sharing resources and need to know pressure periods on other projects.
Plannyway provides multiple ways to visualize your work and manage your team (boards, lists, members, Gantt). Honestly, I don't even know what other solutions provide such a good user experience.