Is the HS17 the standard install now? No it is not
Can the clients connect via ethernet? (I've got cat5e and coax to all
TV locations) No Coax only or wireless
Will my 3 casual TV's require the client, or does DTV have an equivalent app? yes on a client there is no app
Do the DTV DVR's have any OTA capability? Yes but the old OTA adapter is hard to find. a new one is being tested but no full release yet
Do the DTV DVR's have any apps like youtube or Netflix? no
Does DTV have a place-shifting features like DishAnywhere? I dont think so