99 times out of 100 I get huttball when I queue up for a warzone due to the large amount of Empire on my server compared to Republic. The problem is that there isn't enough players on the Republic that are queueing for a warzone so the system will instead match you up against the same faction (and the only WZ than allows that is huttball). I love hutball but I also wanna be able to play the others as well.
What I think they could do to solve this is either to change the queueing system so you can sign up for a specific warzone, or make it so that you can't play Empire vs Empire and Republic vs Republic in huttball. If you have any other suggestion please leave a comment.