These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Anticlimax Boss: Shalim-Shachar (re-skinned Israfel, the 7th Angel) is eliminated early. Dancing is way too silly in this setting. Inverted with Moloch (re-skinned Sandaphalon, the 8th Angel) which is turned from a rather anti-climatic Angel defeated by egregious middle-school physics into a giant escalating battle spanning the length of a conventional novel, that just gets worse and worse.
Word of God says that if there was an ANE anime, Operation CATO would be the season 1 finale.
Crazy Awesome: Oh, sure, the fic may act like it's trying to avert it. But, really, a fight between a Star-Spawn with a Mythos-ized Barrier Jacket and Intelligent Device (Signum's to be specific) playing the role of Asuka, versus lobotomized-Cthuloid-monster-Engels playing the MP Evas (so, pretty much the same thing), in a re-enactment of the climactic battle of End of Evangelion, under the sea, in a giant grotto with a statue of Cthulhu that gets used in the fight? Yeah, it's Crazy Awesome.
Subbing versus Dubbing: Ken rants about the inferiority of the both Post-Reform and Pre-Reform official English dubs & subs compared to the original Japanese and how they screwedthings up. This is how he recongnizes the Japanese Shinji was mumbling, by the way.
Villain Decay: While still dangerous, The Order and the Rapine Storm are a lesser threat because they are outnumbered compared to everyone else or are no longer underestimated.