I don't think it should be nerfed, but if it was I think the most logical would be to simply to either lower the amount of hammers or remove tracking. It'd keep its armor and be effective at a range, but it would be harder and take more skill to successfully aim and kill from afar. This would allow HoS to remain a tank class, while potentially nerfing its damage output and requiring better aiming and/ decision making to cope with it and keep it effective.