After reading through it, there's a lot of good stuff that I like!
The art is bright and really pops, I get the sense that this is a superhero meets comedy hijinks (at least in this beginning section here) so that really helps fit the mood. In terms of writing, I do like the banter between everyone in scenes, it feels very chummy and natural when they're in capsules which is good. I think the biggest gripe I have right now is that everything is paced quite fast?
In the first episode, we're immediately jumping into the fray with this character(I don't even think we get a name either) and the test portion is only a few pages so we don't get to dig too deep into everyone's powers and their teamwork style. I think in general you could lengthen scenes more and use that to your advantage to let the characters kinda breathe instead of pushing to the next scene as soon as possible.
The story is interesting, I've never seen superheroes based on Australia and Australian culture so it was cool to see! There's a lot of good stuff going on, I think you have the foundation of a good idea, its just refining the execution that will really make this shine
I hope this helps!