One feature you might want to consider adding in the future, if at all possible, is a user-friendly map maker, similar to what Far Cry 2 had for instance. Since the whole premise of the game is based around toys, I think a system like this would be a natural fit since it would give players a much more accessible and fine-tuned way to create custom maps/scenarios; essentially giving players of all ages the freedom play with toys in a virtual setting. Don't get me wrong, the "Toy Box" mode is pretty cool, but it appears you can only place units and structures in existing maps, not create new maps entirely. It's true that if users really wanted to, they could probably learn Unity to add new content to the game, however, there are a lot of people out there that aren't especially savy with more technical editing interfaces, even if they are arguably more powerful.
By providing a simple to use, but flexible ingame editor like Far Cry 2, it'd open up content creation and artistic license to a demographic it previously wasn't available to before. Furthermore, by adding an ingame hub to host and rate custom content, it would serve to increase this game's replay value exponentially, offering a seemingly limitless amount of content. I imagine it would take a lot of time and hard work to make something like this possible, but the payoff in the end would be well worth it.