Theme bloat?

In video game development, a common issue that comes up for mostly amateur studios is the lure of feature bloat. The act of adding in new mechanics or types of interactions or minigames until the game because a big, wide, shallow pool with no depth.

Is there a similar issue with writers? I know that a lot of stories I've started on end up having all sorts of layered themes and narratives to the point of looking like an unfocused mess after I step away. Do you have the same problem?