Hey, thank you for checking out my entry.
You are absolutely right, little playground for players could def add to the fun factor. Did some "daydreaming" yesterday of what improvements or additions I'd do, and got stuck at level editor, as one of the ideas was plates that when stepped on would release giant rolling ball at another place and I couldn't figure out how to make that happen in UI just yet.
However in current form, it wouldn't be impossible task, it just uses level grid data so nothing's harscoded in anywhere :)
Thank you again for awesome suggestion!