Greetings, dear developers of xrdp server, It' will be perfectly to have an xdmcp library to wirk with X11 server directly. In this case we can get a true terminal server, like a windows Terminal Services. If xrdp server would be to able run default profile after connect (for example immidiately choose 0 section of config, with libxdmcp configured at localhost), than it can bee look as a transparent proxy between xdmcp and rdp protocols.
Sorry for my English. WBR, Vanya Batalin.