New Wallabies' coach Ewen McKenzie has talked about establishing a pecking order for different positions.
"In terms of the pecking order, I guess it's out of our hands, and that's why I don't really get too concerned with it,'' Toomua said.
"You're lying if you say you haven't thought about it. I think every person has looked past and seen who they are up against and it's only natural.''
Toomua attributed his career best form this year to playing regularly.
"I hadn't been able to string 10, 15 games together in a row in my career, so this was probably the first time I've been able to do that,'' he said.
"Having week-to-week games just allows you to work on things consistently and the fact that I've been able to do that allows for improvement.''
Toomua also cites the influence on his game from Brumbies head coach Jake White and their attack coach, legendary Wallabies five-eighth Stephen Larkham.
"Steve has been massive. We work through a game every week,'' Toomua said.
"He obviously was a different player than I am, but you couldn't really ask for someone better to be mentoring you. It's great.
"Jake actually has a lot of hands-on stuff as well.''
Toomua said he wasn't disappointed about being overlooked for the British and Irish Lions series.
"If I'm being 110 per cent honest, I never really thought I'd make it,'' he said.
"I realised that they'd probably use the group that they've used in the last few years and I didn't have any runs on the board, to be fair, to say I warranted selection.''
-AAP