For me raiding is boring now, oke war boosts makes a bit fun but not helps to much.
I think some kind of new challange needed, like i suggested before: story mode, or a new type of challenge:
Where AI will attack your base with a predefined hero,team spells and you should change your defence to stop it,
It will be possible to view a reply how the Ai attacked. And can modify the base and run challange again. There could be more challanges.
challanges with restrictions like defeat the challange stage only with frosters and blizzard