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: Within Temptation
Big in Japan: To the point where their recent album "The Unforgiving" has three special bonus tracks recorded exclusively for the Japanese CD.
Broken Base: They seem to be bracing themselves for this in the wake of using fewer orchestral sounds and more 80's pop elements in The Unforgiving; their website implies that the first preview song was the more traditional WT song Where Is The Edge (rather than the first single, Faster) as a reassurance to old fans that the old style isn't completely gone. A year after the release seems to suggest that this was averted, with it tied with Enter for their highest rated album on Sputnik Music.
Growing the Beard: Within Temptation's sound gets noticeably more mature and more complex around the time of "The Silent Force," with "The Heart of Everything" being even better and "The Unforgiving" earning its place as a Rock Opera. They go for a more subtle approach to fantasy and take on a lot more serious issues, at the same time.
Hilarious in Hindsight: The male guest vocalist on "What Have You Done?", Keith Caputo came out as transsexual in 2011 and after undergoing gender reassignment surgery, changed his name to Mina Caputo. Considering the lyrics of the song...
"Say My Name" is this and Tear Jerker simultaneously due to being about a child lamenting that their Alzheimer's-stricken parent can no longer remember the child's own name.
The lines: "I'll make them bleed at my feet" and "One by one they were surprised" from "The Promise" count too, especially cause it strongly sounds like she is singing the latter with a smile on her face.
Potentially the comic books and short films that accompany The Unforgiving. For instance, the first of the three films features three apparently cannibalistic children. The children are revealed to be the Triplets, created from Mother Maiden reviving the deceased corpse of a young boy with split personalities due to being sexually abused by his father.
Try playing "Intro" from Mother Earth set to repeat itself. In a dark room , maybe the random voices in the background start making sense.
The video for "Frozen" seems to be a story of a mother killing her abusive husband to protect her daughter. Then Sharon picks up the doll the daughter broke after she was abused.