I notice the Pretoria club's rules say "a bus wiring system must be used". I assume this is in the context of DC analogue modules
Maybe this is the way forward - for DC analogue, you build it with sectional switching on one bus. . If on any occasion , someone wants to operate a series of modules under DCC , just turn on all the section switches.
The key thing is that the DC wiring must be man enough to cope with the higher current flows used by DCC - ie you need a main bus that can handle 5 amps
There was an article on wiring in the current BRM which seemed to be suggesting - for DC analogue wiring - things that looked very like DCC wiring practice - eg wiring dropper wires to a big heavy duty bus to minimise voltage drop on a big layout
I'm arguing for a basic wiring spec that allows DC but an easy switch to DCC if a group of people at a meet/show have a DCC system and want to use it to run the modules
It seems to me that it is DC control which is going to have the bigger issues to be solved. How exactly can you isolate the goods yard on a wayside station from the main running lines? How do you shunt the yard with the pick up goods.
Do you have an operator to each module (what might be called the "block section" concept)?
Or do you drive some modules off adjacent modules? If so , what do the connectors look like and how complex would they get??