1:02 you have 6 stars. For the first one it‘s the main „skull“ in the middle, after that for every Master you get, 1 Star lights up and new rows get added. Hope this helps 😭
5:32 fun fact you can actually hear a coin sound before opening starr drops and ranked drops if there is a sound you get coins PP and bling (also counts for ranked so if there is a sound you'll get bling)
You could extend the challenge with making a new account and upgrade all brawlers but not buying anything (no gadget, no sp, no gears) and then team up with two other players which are doing the same and then reach masters like that. I don’t know if this is possible but I think you would win this challenge