The pair of Mark Waid and Bryan Hitch seems like a dream team for the Justice League, just as suited to the franch as Grant Morrison and Howard Porter. However, while the Morrison/Porter JLA run is still remembered to day as some of the finest superhero comics put to print, Waid and Hitch's tenure on the title is scarecly brought up, and when it is, it's viewed universally as a disapointment. Why is this?
The most concrete answer I found is the sheer amount of fill in art due to Hitch's struggle to turn in deadlines. This is a fair criticism, but in my opinion Waid's writing was spot on: Waid managed to turn silly concepts reminiscent of the Silver Age, such as seperating the Justice League's alter egos into seperate entities, into horrifying, world ending events that only the JLA would be equipped to handle.
I feel this run's greatest sin is it doesn't add anything new to the mythology. Nothing in Waid's JLA has any affect on the DC Universe.
In a mere 42 issues (minus fill ins) Grant Morrison's JLA established dozens of new concepts, directions, and characters that were still used long after it ended.
-Introduction of Zauriel
-Introduction of Solaris
-Introduction of Prometheus
-Introduction of White Martians
-Rebooted the Shaggy Man
-Rebooted the Key
-Rebooted the Injustice Gang
-Rebooted Starro
-Killed off Metamorpho, lasting years
-Influenceal on the modern portrayal of Batmam
-Rare appearance of The Sandman in a superhero comic
-Influenced the Superhero genre in the 21st century
-First Justice League featuring the Trinity in over a decade
The accomplishments of Waid's run pale on comparisln
-Batman is kicked off the JLA but comes back
-Queen of Fables is introduced
-Return of the White Martians