Warrior Example: Jotun - Storm Shield
Storm Shield’s Current Damage = 18% of Dragon’s Base HP
After Spell Scaling : Storm Shield’s Damage = 14% of Dragon’s Modified Max HP
Just for you Bambam.
In this case, the % for Storm Shield was decreased but the overall potential for damage increased due to consumables and research/gear. They may decide to increase Explosive Shield or Lethal Barrier %, rather than decrease it so you can hope for that I guess.
It’s always possible, although I wouldn’t count on it because only 2 dragons have LB and both spells are meant to be introductory level spells, with better spells being unlocked later on.