On the whole, I think Nvidia should be commended for drafting the Enthusiast System Architecture specification, as I believe the industry can benefit from an open standard for hardware monitoring and control, but I still have my concerns. While ESA sounds great in theory, the problem is that the only thing being certified is the protocol and that information is being sent to the host PC.

What it doesn't do is guarantee that the information being sent to the host PC is correct. For example, your power supply could be reporting incorrect voltages or load while your water cooler is reporting the wrong liquid temperature or flow rate. The current draft of the specification means that you wouldn't be able to determine whether the information you're actually being presented with is accurate.