It would nice if with quarterly legendary dismantle we would receive one full dismantle of event champion of our choice.
It would allow players to adjust their main formations to include new champions they like. However, it would be still quite slow process and even after full year it would be less than half of formation. Thus it wouldn't trivialize a difficult variants or other challenges.
#Full quarterly dismantle
lofty crown
rustic tapir
Would be nice but probably not happening. Since the reason full dismantles exist is so you can get investment back if you no longer like a champ because of the rework they get