First of all, thank you for creating this wonderful editor. I love ogmo editor so much because of its simplicity. But I think component based entity creation might improve the editor. What I mean by component based entity creation is that instead of adding variables to an entity, we first create a component that contains the variables. Then we can add these components to entities. This way we don't need to put similar variables to entities thus saves us time. Also games that use entity component system(ECS) would benefit from json parsing.
Instead of adding Damage, Health, Armor variables to every single entity one by one, we can create a component called CombatStats that includes those variables. Now we can easily add CombatStats component to any entity that need it.