Why not change the free user's layers limit 2 to 3 or 4?
1-Background and tile
2-Player and NPC
3-Game UI
4-IDK
Develop games in your browser. Powerful, performant & highly capable.
Why do? The main idea is to be able to try before you buy, not give free users so many tools that they don't feel the need to buy. From a business standpoint that would be a rather bad idea.