Based on a sample size of one, I think there is a real chance that Len Ikitau will move permanently to 12 at the Brumbies as well as at the Wallabies. I was amazed at how naturally he seemed to fit into the 12 spot on the weekend, and given it has been the most obvious weakness for the Wallabies over a longish period, I can easily see him staying there in the long term, Especially if as expected Sua'ali'i retains the 13 spot where he can use his height and aerial skills to great effect. Lenny is a world class 13 but he also looks to have the 12 spot covered to world class level too.
At the Brumbies, I think it could work just as well with his combination with Noah at 10 the same as for the Wallabies, and with Sapsford who is physically similar to JS playing that same role at 13.