I just got caught up on the last two issues of this series and it has confirmed for me that the first issue wasn't a fluke. This mini is the real deal. It's a fun, if perhaps inessential, love letter to comics history and all its many styles.
Issues #2 and #3 featured heroes & villains inspired by manga and the alternative heroes of the 90s respectively. The art is beautiful and features spot on homages to different art styles. The characters are interesting and uplifting, yet not without depth. If the darker turns that parts of the DCU have taken have got you bummed out, the hope, optimism and pure joy of Dial "H" For Hero is exactly what you need.
These are comics that have such love for the DCU. If you truly believe that this is the direction DC should to headed towards, you should be supporting books like this.