Hey there! I bought Odin Serializer today to integrate it in our project, since we were growing increasingly annoyed with our previous solution: VFW. It's powerful but very very difficult to extend, and has caused a lot of headache over the past year or two. One feature however that we had added that really increased visual recognition of our inspectors is semantic coloring for our objects. Take a look at this picture:
In our case we applied it to sequence items (list, array, etc.) but it could be done per object instead. (every foldout would have its own coloring) The coloring is picked from the hashcode of the type, that way every type has a consistent color and it's automatic.