At many Hyatts, there is no difference between a club room and a regular room. But at some - e.g., GH Singapore, there is a substantial difference. And at these, the Club award guarantees nothing beyond club access.
Having status in other programs which provides guaranteed lounge access, the club awards have basically zero value to me (as does Explorist in general). To the extent I stay at any Hyatts in 2018, it will be very property specific and have nothing to do with Explorist.