I look forward to your progress with this project. I only plan to use JRMI for the Decoder Pro functionality as I already have a wireless Digitrax controller and it provides sufficient function buttons for my requirements.
Regarding automation, control and signalling I will be incorporating CML's LocoShuttle which by using sensors (I use Richard's from DCC Concepts) a 16 step sequence can be programmed which will take over control of a DCC fitted loco. More on this to come. Additionally the CML SIGM20 board is also very capable it would appear as a standalone signal logic controller coupled with the sensors and LocoNet point position indicators etc.