Agree with definitely no and no to the OP.
I'm an example of someone who missed out on a first round JCU interview this year. I have a GPA of 7 (From an Honours Degree I have completed), am a rural applicant (from Queensland), have submitted a paper for publication in a A* (prestigious) peer-review journal, have worked as a phlebotomist in rural queensland, have worked as a medical research assistant for Melbourne Uni and have shadowed doctors in a variety of fields. I have a genuine desire to become a rural doctor and I also had my sister who graduated from JCU med a while ago (and who works as a rural doctor) review my application.
I'm not saying I deserved an interview more than anyone who got one - obviously other people were considered to be a better fit to the program. BUT I am saying a simple 5.6-5.8 GPA is NOT all it takes.
Best of luck though...you don't know unless you go for it!