Broich won three Grand Finals and two Premierships with Brisbane Roar, as well as the two Johnny Warren Medals, two Gary Wilkins Medals and the Joe Marston Medal in 2014.
The German, who retired in 2017, spent seven seasons in the A-League and made more than 180 appearances for Roar.
He believes that while in the past there were several clubs pushing the A-League forward as a competition, more recently only Sydney FC have been doing that.
"Personally I think the league peaked three years ago, even four years ago," Broich told the Life's the Game podcast.
"I just thought when we won it in 2014 we still had a great team. We had guys like Liam Miller, Luke Brattan in midfield and we were playing an incredible brand of football with great players.
"But then Gombau was at Adelaide and Tony Popovic was at Wanderers, and Ange had taken over Melbourne Victory, so back then I thought there was at least four kick-arse teams and the football that was being played and the different styles of football.
"It was awesome, it was so competitive. It just feels ever since no one has really taken the bull by its horns, other than Sydney FC obviously.
"I absolutely love the way they play, they're dictating play, they have great rotations, their offensive structures, their flow is so easy on the eye. It's incredible what they've been doing.
"But I feel everyone else, even the big clubs, haven't shown up lately."
Broich has gone into coaching and has ambitions of one day coaching Roar. The 37-year-old has recently been working as TV pundit covering the Bundesliga.
He added: "My overriding goal is to be a coach one day.".