That being said, there is probably such thing as too much hidden complexity.

Definitely. You may find the following links relevant:

Joseph Tainter - Collapse of Complex Societies

Clay Shirky - Collapse of Complex Business Models

To summarize: each problem solved through an increase in complexity cumulatively adds overhead to the system. Eventually, the net return on solving a problem is completely offset by that overhead. After that point, the system must simplify - either on its own, or with the "assistance" of external forces such as barbarians or hostile takeovers.