Kale has been focused in bgs so hard I almost felt sorry for him whenever I encountered him. So as a non-healing caster, I don't think you have it too bad.
I just think the whole "seek out and kill" attitude discourages objective gameplay and any variety in the bracket. Soon it'll be 8Hpaladins taking on 8 Druids because no class without survivablity is viable.
We were able to seek and destroy Kale for an entire year and still win games. The grudges make it more competitive and enjoyable IMO. The main reason people gave Kale so much crap is because the second he felt his padded scores were threatened he'd opt out, so we just forced him to do it for giggles.