Sounds interesting. I've used knoppix to XDM to my SGI Indy and it has very good performance. I boot "knoppix 2" and then X -query 192.168.0.123

I guess you could modify the linuxrc file inside the miniroot.gz on the floppy and add a case statement that if you type in something like knoppix thin hostname that it will xdm to the host name or knoppix rdp hostname or knoppix vnc hostname.