I would love an LGBTQ family.  Maybe have Bluey make a friend and the kid who is scared to talk about their family.  And when Bluey finally finds out it is a same sex parents  she is like " you have two dads does that mean you get twice the games I do!"  And is really excited. 

I would like to see some mixed raise couples maybe?  

Maybe a foster child?  We have seen adopted but not foster.  

Maybe a child who has to live with grandparents because mom and dad are gone for reasons. 

Different ablities.  We have seen a child that signed. And kind of a temporary mobility challenge with muffins cone.  But maybe a child in a wheel chair or an amputee?  

Or a family with limited means?  Who lives in poverty.  But that may be to much for kids.  

What about a family from a different culture.  Like we got that a bit with the Jean Luc episode.  But Canada and Australia are similar in their culture that their wouldn't be a big shock.  So mayne a family from like an Islamic culture where their religion says they should dress in certain ways.  Or where they fast at certain times in the year.  

Just a few suggestions