Hi,
Not yet, a future version of Traintastic will include this layout for different system types including simulation support, but that will take some time to develop.
DCC-EX would be another option indeed, I’ve already a DCC-EX system with ethernet to, that I use for testing, the DCC/S88 will be the first to build as it is most generic.
For the VPEB system there are a few dealers in Europe, but none in Australia as far as I know. The DINAMO system has one disadvantage, it can not operate without a PC, the PC must keep track of all trains and link/unlink the blocks so there are no shorts. They (VPEB) don’t have their own control software so the need others too support it. Last december I got a call from the main representative if I would support it in Traintastic as well, I said yes, so the donated some hardware 
DINAMO support will be added in v0.4.0 as well, still working on it.
Greetings,
Reinder