Yes, I've succeeded in remastering Knoppix with FLuxbox as my only Window manager. I've also removed gnome, kde, wm, larswm and everything else. As a result the cd has gotten much smaller so after that I've added many packages of my personal choosing. And even after that the size of the cd is still only at 608 MB. My cd is pretty much perfect right now, i have my own customized flux menu. As soon as I get home, I'll paste in the list of packages that were added and removed.
I also removed kdm and used xdm instead, cuz it is much cleaner that way. I edited the boot.img so that the sysconfig bootup screen does not list other windows manager and that it will also automatically select flux w/o a user having to enter in the cheat code to bootup in flux.
Glad to see somebody else on this board who's interested in this.
If you need more help remastering and customizing, post in here.