Current Australian props
I've been thinking about this for quite a while, Robertson in particular, and I've come to the conclusion I'm watching Oz rugby through a telescope rather than a microscope (although with the current state of Super/Rugby/Wallabies, etc, I might be better advised to use a periscope......... boom/tish).
2016 was Tom Robbo's first year in Super Rugby, an opportunity arose due to Kepu's absence and Ta'avao's disappointing performances early in the year. Tom grabbed the opportunity with both hands and played remarkably well for a novice in the most demanding position on the field. This allowed Ryan to concentrate on the LH side, someone who also grabbed the offered opportunity and played well. Paddy has some technical issues at THP leading to him kissing the dirt far too often, especially when he first comes on as a second half replacement. Ryan NEEDED to get a lot of time at LHP this year to continue developing, but he's been relegated to the bench, again. Back to Robertson: this is Tom's second year at the top level and it should be expected he'll catch some sort of dose of second year blues. Let's not forget he's also doing a medical degree on top of pro rugby.
I'm not around training at either the Tahs or Wallabies so I can't comment about front row matters. But I can't help thinking Robertson and Ryan should've been left to develop their skills at 3 and 1 respectively. We always need depth at THP in Oz rugby.