Hi Steve,
Some great ideas there - particularly about using MERGCBUSServer. I'd forgotten about that. I used it for a while after we had it demonstrated at one of the MERG meets. At the time I saw it as a convenient way to connect MERG FCU and JMRI to the same USB. Since then I've had little reason to use the FCU since much of my work is with home grown Arduino projects, so it fell 'out of favour' (not to mention ditching my last rarely used Windows machine in favour of linux). I shall definitely give it a go again!!
You also mention some of the growing list of JMRI tools available for CAN/CBUS. I've not used most of them at all. Clearly there has been a great deal of hard work with their development - again a big thank you to all the JMRI team!
Cracking this problem is quite important to me as it's the first time I've managed to get some traction within the club to use 'computers' at all, so I need it to go well!! It can be a lonely place as the only person in our club interested in this type of technology, so it's great to have the support of yourself and others on the forum.
Thanks
Andy