Thanks to everyone for all the great suggestions and ideas, and I've listed them below. I hope I got them all.
Mundulla Pub, down near the Vic border
Balranald Tri-State Overnighter in March
Sedan Hotel
Stanley Bridge Tavern in the Adelaide Hills
Overland Corner Pub
Magpie and Stump in historic Mintaro (Richo and I recently checked this pub out and the food was pretty ordinary)
Silverton Overnighter
Burra Gorge for a day trip BYO picnic
Coffin Bay overnight
Port MacDonnell overnight
Quorn overnight and the Pichi Richi Railway
Winkler Park Saddleworth for a day trip BYO picnic
Don't forget the NatRally in Wooli in October
I suggest that everyone who wishes to contribute picks their top six ideas, with perhaps Balranald and Wooli making it eight formal SA RTE events for 2017. While the monthly mid week RTE to Birdwood is a fixture, it has not been well attended, but I'll keep it there as an option, and simply post under that thread if you wish to attend, and see who responds. Alan and I will use the feedback to create a RTE calendar for next year. In the meantime, if you want to go for a different ride, over and above those that get listed, simply put up a post under "South Australia".