Something I have noticed while playing with the Cloud cover and density in studio is that Roblox sort of has Ambient Occlusion in their engine. When you increase cover, the game world darkens, and when you decrease cover, the game world brightens back up again. Something I would like to see in the engine is the ability for developers to tweak these settings, and maybe have Ambient Occlusion also work (Optionally) for more objects and places within the game, such as Indoor buildings and in the shadows and under the cover of objects.
This would allow for more realistic Real-Time lighting, and will give us creators more options when creating our games, providing the players with better experiences.