Smith would also be a debutant Lock if selected. Then there is LSL (Lukhan Salakaia-Loto). I reckon there's a very good chance Frost will be in the XV along with LSL (Lukhan Salakaia-Loto).
On the matter of scrums, despite Allan A being out injured the Brumbies were ok, not dominant and sometimes not equal but for the most part holding their own on own feed in the SRP (Super Rugby Pacific) competition until injury hit the LH side with both Slipper and Schoupp unavailable. The scrum woes then were attributable to a rookie in Vella not being up to scratch (yet) and a relatively inexperienced THP, van Nek, moving across to the LH side.
Near the end of the season and during the finals, the scrum was a bit more stable week on week as Allan A worked his way into match fitness, even though the injury problem still existed on the LH side. They had some poorly executed scrums against the Blues, but who didn't? Overall, though, the forwards acquitted themselves at lineout time and in general play as good as any and better than most. They didn't get to the semi-final by being less than the best Aussie side in the competition. And Allan A was one of the stand out performers in general play against the Blues. He had an enormous game carrying and defending. Anyone saying elsewise just wasn't looking or maybe didn't watch the game at all.
I will be shocked if Ala'alatoa doesn't start against Wales and surprised if he's not the captain in these early tests.