|According to the law of diminishing marginal returns, this plot device would inevitably|
get less traction with repetition. From Crisis on Infinite Earths #7 © DC Entertainment
Elsewhere, he explains how Grant Morrison (and everyone else) just doesn't get how Fascism actually works in Jack Kirby's opus the Fourth World when examining the writer's often discussed crossover Final Crisis.
Charles Hatfield tackles Crisis' one true spiritual successor, JLA/Avengers, where he's not as affectionate as Tim towards the continuity porn and nostalgic indulgence that predominates, now that publishers are very dependent on decades-old properties and older fans. I suppose that where someone stands with regard to the big crossovers of the Eighties (Secret Wars anyone?) is one useful way to categorize the loyalties of present-day fandom.
For those who just can't get enough of classic crossover trivia, there's always blogs like DC Multiverse.