This is really difficult to answer considering that A) you don't have the expansion and it's unclear what you would desire in a change. If you want a super funny build where everything just dies you should look into the turbo chicken speed build (requires expansion). If you want to continue to sit behind and let your pets kill stuff you should try a Zuni build (with Garg - Humongoid for AOE damage, Zombie Dog - Leeching for heals, and replace spiders with Fetish Army - whatever the +3 minions is called).
If you want a more active build you could try the Aracnyr Firebat build. Everything that I mention requires the expansion. Well worth it if you enjoy the game.