Well, Krix can't lift two tons. He can lift a little over one ton. 

In all honesty, I'd rather amp the existing heroes to true demigod levels and say he can lift 10 tons (putting him back in play as a physical powerhouse but still weaker than N'athr and Sovereign) than nerf Sovereign and N'athr. Of course, the other original heroes would need to be amped as well, and Light might have something different to say if he ever comes back, but it would make the battles feel more like it's two demigods fighting.