Hi there,
Would you find runtime level modification useful ?
Your game is running and you are able to pace some objects on the level, the objects you placed are saved in the level file.
This would make level creation smoother as you can play test and edit on the fly.
I think i could make something like this, having some placement tool able to run when the game is running and saving the objects and their position, rotation to a file. Each time you launch the level, at start the data file is read to populate the level, it's a way to do it, while it's not native and not the best.