I just tried out Tiny Core 3.3rc3 (really microcore_3.3rc3 with corel ements, wbar and jwm).  I like it.
Fluff is excellent.
  I particularly like the "use sudo" button.
  The menu item "insert in trash" seems ripe for a name change.  Conceptually, sending something to the trash seems more like a "delete" operation than an "insert" operation.  How about "send to trash"?
  It might be nice to have a "view" menu item for scripts, as well as an "edit".
I liked mfm, too, and didn't really have time to give it a real shakedown.  Any chance of having that as an extension?
"editor" is great.  I've never had a good relationship with vi.
  "editor" seems to use C language syntax highlighting regardless of the file being edited.  If you edit, for instance, /etc/init.d/rc.shutdown, the entire bottom half of the file is colored green as if it were a comment because the script includes the slash-asterisk character pair.
Lee