I've been thinking about this a bit and I think I have come up with something.
The kangaroo needs to be a little more ..... not girly I was thinking a stronger looking kangaroo (cartoonish, more manly and sporty looking etc) holding the cards as above.
As long as we have a concept I can go to a illustrator/artist who can draw a custom logo based on our concept, but to save time and $$ I want to come up with the base for the logo beforehand so they have an idea and direction to go with.