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.
YMMV: Halkegenia Online
Archive Binge: Look at the thread number on the Sufficientvelocity link. Multiply the number of completed HalO threads by 100 pages each, and 25 posts per page. It currently stands at 73000+ posts.
Base Breaker: The Tarbes arc at the time it was being published was not very well liked by many people who saw it as little more the Filler put in to give Louise something to do though that has largely quieted down as of the second arc with the Pixies better tied in to the main story.
Louise's actions towards the end of v2.0 massively divided readers, with one group saying she performed the worst kind of privacy violation to 60,000 people in a mad search for power and control which could have lead to the enslavement of all the fae. The other group says that because she was manipulated into the action and she didn't have enough information to make a proper judgement of her actions, she shouldn't be blamed at all, and that everyone who thinks she's in the wrong is being unfair. The arguing was so bad, it led to a temporary Creator Breakdown.
Better Than Canon: The author has gone to great lengths to flesh out elements of the Zn T universe that were glossed over in the source material
Moral Event Horizon: Cromwell turning Aki, Arguile and the other dead SAO players into zombies.
Sir Dunwell was a loyal knight of Albion until the Crown Prince ordered him to destroy the nation's grain reserves, thus starving the entire country, to inconvenience the rebels. The prince's crossing of the horizon triggered Dunwell's Face-Heel Turn, causing him to kill the prince and defect to Reconquista.
Sigurd and Ephiael manipulating a traumatized, confused, and emotionally unstable Rip Jack to kill for them as part of their plans.
Paranoia Fuel: The zombies. You won't know they are dead until your best friend/spouse/child stabs you with a kitchen knife, proclaiming your salvation in the name of the Founder.