Rex/Phasma on Defense question

I don't have those chars, but I use Mace Windu at early GW with the same free AI you do. xD He almost never gets benefit from his unique, he nearly always picks other char, it's just ridiculous. It's sad people need to build brainless teams for Arena, you end up seeing the same teams over and over, with 1 different char. I like to have a CC team, but I keep going up and down in the ranks, getting easy wins most of the time when I play my team because I use CC wisely and I use heals when there's a chace to keep the char alive, not when someone's bellow 25-20% hp and it's a coin flip if he ends up alive. It's not that hard to make rules for my team to follow, I end up following some general rules while playing the arena. I'd love if they gave us the chance of tunning our Arena team behavior.