One innovation this year has been to combine the K3 28Mhz IF transmit and receive with an MCL BNC combiner in the indoor shack, at the back of the K3. In the outdoor shack I've put another (SMA) MCL splitter inside the Anglian transverter to split the 28Mhz IF back to transmit and receive, again. This way I use just one cable, at 28MHz, for the RF path between the shacks.
The second, lower loss, coax can be used for another IF! e.g. for the 23, 13 and 3cm bands using the K3 or another rig.
Rotator control uses my ERC controlled Yaesu G1000DXC, over the home WiFi network and outside shack PC.