(a) Rename of Xfw to Xft, to be intuitive. XFE (X File Explore), XFT (X File Text), XFI (X File Image) and XFP (X File Package).
(b) Modularity by separating Xfe, Xfw, Xfp and Xfi into separate packages. So that there is a choice to install select or all.
This is the work of the distribution packager. Each Linux distribution has its own policy, and packagers do what they want with the software we provide (see Debian or Fedora to compare their policy).
Cool! That makes sense.