Mod Support (adding custom meshes/assets)

What Feature would you like to see included within TaleSpire?
What does it look like, how does it work, how is it used. Paint us a figurative picture.
System for importing custom meshes/assets and using them as in game objects. By allowing players to add their own 3d meshes and textures you open up the game’s longevity infinitely as no matter how much content you release on that front people will ultimately always desire custom content or something new after they use the provided toys.

What situations would this Feature be useful?
Descriptions, examples, interactions with existing features - whatever you can think of to get your idea across!

 I think the first thing sums it up pretty good, Very gamer friendly decision on many fronts. By building an active modding community your game will develop a cult following of lifers.

Additional Thoughts/Details
Custom content will not mitigate interest in your own provided content/dlc etc. as the cohesive quality of your product will always have appeal to those that are interested.