Absolutely! I'd love to see how this tool is being used. Even if it's just "behind the scenes" stuff for a bigger project, please share some of it with us!
I wasn't sure if itch would keep the previous comments when I switched to the discussion board, but I think this is better for things like this. At least you got to see that the features were added and try them out.
As for layers, I'll have to think carefully about how to implement them. Could you give me more details about how you would like them to work? Would just a few layers be enough, or do you need to be able to add layers indefinitely? Do you need to be able to change their rendering order? Do they even need to overlap? How would you like them to export? If you can help me understand how you'll use them, I can try to build it accordingly.