For stronger fighters instead your SSJ3 Goku (purple) and Yellow Goku, you can put Gohan ssj1 transformable (Yellow) and LF Goten, no ?
You will a bit lose in Z-capacity, but get stronger fighters in the actual meta.
You should change the kaioken goku cuz it onyl buffs blue. Change it for someone who buffs whole son family.
My kaioken goku is at 6 stars so it has the upgraded z ability that adds 30 percent to blue and son family strike attack and defense