i was thinking about ways dragons and bolt throwers could become more useful and better. since dragons are magical creatures you could give sun dragons 6+ ward moon dragon 5+ ward and star dragons 4+ wards and against all attacks that cause multiple wounds the ward is increased to three plus. this could represent the fact that before battle either elven mages put wards on the dragons or the dragons themselves do that.
For bolt throwers i was thinking they could shoot 4 big bolts and 6d6 str4 bolts and keep the same price.