As for the first coop that you mentioned, that is the smart string stuff and IIRC, that was the first smart string coops and that coop manager hasn't done another coop since but even if I'm mistaken, the hub is useless without some controllers to connect to it and combiners and SSC's are simple boards. As for the second coop, there is little difference between the conductor and the slave, just less parts on the slave (same board), so there is not much more effort to offer both and the trigger only works with the Conductor and is also a simple board. Doing a coop with the Express, the SSR4, wirelesss, and some DX splitters would be great for the beginner but would be the coop from hell for the coop manager.