Cartesian Doubt
Cognito il Sum
Recent ones;
Countdown
Letting Metzler relaunch JLA
Launching ; Flash Fastest man Alive with a shit team
Trying to make Sentry Marvels Thor
The ongoing Supergirl serries
The return of Suicide Squad (When they already had a contempoary version in the Secret Six)
Killing Connor Kent
Not Keeping Justice League Elite book
D.C. Pissing off Rucka
Marvel letting go of Grant Morisson
Not letting Mark Millar write Superman
Not letting Millar and Grant Morisson write Superman 2000
The New World War 3 (D.C.)
Bringingback Hal Jordan
Pissing off Mark Waid
Every Single issue of the Outsiders, when the superior Justice League Elite existed
Failing to make Checkmate popular
Relagating Kyle Rynar to the GLC bench
Bringing back Jason Todd after Hush
Not making Jason Todd Hush
The entire Bendis Run on New Avengers
****ing the Superior Ultimate universe out of pure greed.
Not making Nor Vahr a prominent character sooner.
Letting anyone near Ares after Oeming.
Not bringing back Thor sooner.
Killing Wally, bringing him back only to relagate him into obscurity
Allowing Geoff Johns off the Flash
Cancelling Mark Waids Legion
The Wonder Woman relaunch
Not letting Gail Simone write Captain Marvel
Making Superman Birthright the officail origin for about a month.
The Green Lantern Emotional spectrum
Ignoring everything the Grant Morisson brought to the X men
Older Ones;
Our World at War
Zero Hour
Not Making the original World War three the epic crossover it should have been.
Making Hal Jordan kill the enitre Lantern Corp single handidly
Killing Superman
Relagating the Eternals into obscurity.
Marvel creating more Skyfather level beings than there are Superheroes.
Creating Thanos
Not allowing Alan Moore to do his version of the Original Crisis
Destroying the D.C. multiverse instead of revamping it to make sense.
Not giving Hypertime a chance to work
Killing Superman again
Letting Jeph Loeb any where near a mainstrem Superman storyline
Not giving Joe Kelly a lifetime contract to write Superman
Not letting Grant Morisson write the New Gods sooner.
D.C. not keeping Mark Millar.
The biggest one ever; D.C. pissing off Alan Moore