I literally use only Xterm, Chromium and IntelliJ. And a gazilion of UI-less programs that are useful only they can feed on each other. How is Flatpack/Snappy

I literally use only Xterm, Chromium and IntelliJ. And a gazilion of UI-less programs that are useful only they can feed on each other. How is Flatpack/Snappy approach helping me?