We haven’t made any changes to KD battles recently @ed.209 - a general note for everyone, we will not adjust any item, enemy, npc, spell etc in game without making a post about it to notify players.
I’ll still follow up and investigate just in case, but I have not seen any changes pushed through since 2.5 released, that are for KD Dragons.
As for spell compensation, all your information and updates can be found in this thread 