Hi,
HPDM can help you configure some "startup script" so that the terminal server will be connected automatically after every reboot, is this the things you want?
Regarding the auto-selecting less-loaded server, thought this should be something configured from terminal server side - somethings similar to load balancing. I'm afraid HPDM can't controll your terminal server, unless the server is installed on a thin client with HPDM Agent installed.