I am not a fan of Midjourney v7. I prefer v6.1. And I want to write about the correspondence of language, per my Language Insufficiency Hypothesis.
Let’s start with the language aspect. Notice how distant the renders are from the intent of the prompt.
This is my initial prompt. I used it about a year ago to generate the cover image with v6.1, but I wanted to see how it renders in v7. Let’s take a trip all the way back to the beginning.
cinematic, tight shot, photoRealistic light and shadow, exquisite details, delicate features, emaciated sensual female vampire waif with vampire fangs, many tattoos, wearing crucifix necklace, gazes into mirror, a beam of moonlight shines on her face in dark mausoleum interior, toward camera, facing camera, black mascara, long dark purple hair , Kodak Portra 400 with a Canon EOS R5

As you can see, these renders are somewhat lacking in photorealism, but the “sensual” term in the prompt was not blocked.
Midjourney v7
Initially, I encountered a hiccup. After a couple of rejections on the grounds of morality, I removed the word ‘sensual’ and received the output. All of the output uses this prompt absent the sensual term.

As mentioned, I have generated several images (including the cover image) with this prompt, but Midjourney is inconsistent in its censorship gatekeeping.

Notice that 3 of the 4 renders in the v7 set don’t even have a mirror. The top right one does, but it’s not evident that she’s a vampire. In fact, I could say that any of these are vampiresses, but perhaps that’s what they want you to believe. In place of a necklace, the lower right wokan sports a cross tattoo.
Midjourney v6.1

Again, these renders don’t appear to be vampires. The one on the lower left does appear to have snake-like fangs, so I guess I’ll give partial credit.
My next attempt was interrupted by this message.

It rendered something that might violate community guidelines. The funny thing is that one can watch the image generate in process. It only takes one “offensive” image to disqualify the whole batch.
Midjourney v6

Yet again, not a vampire to be found. Notice the reflection in the lower left image. Perhaps vampire reflections just behave differently.
Midjourney 5.2

Midjourney v5.2 was a crapshoot. Somehow, I got vampire lips (?), a Wiccan, a decrepit Snape from Harry Potter lore, and Iron Maiden’s Eddy reading a book. It’s something. I’m sensing gender dysphoria. Dare I go back further?
Midjourney v5.1

It gets worse. No comments necessary. Let’s turn back the clocks even more.
Midjourney v5

To be fair, these all do have occult undertones, but they are weak on vampireness.
Midjourney v4

To be fair, the render quality isn’t as bad as I expected, but it still falls short. There’s further back to travel.
Midjourney v3

Some configuration parameters no longer exist. Still, I persist for the sake of art and science at the cost of time and ecology.
As much as I complain – and I complain a lot – this is how far we’ve come. As I recall, this is when I hopped onto the Midjourney bandwagon. There’s still more depth to plumb. I have no idea how much of the prompt is simply ignored at this point.
Midjourney v2

What the hell is this? 🤔🤣 But I’m not done yet.
Midjourney v1

The damned grandpappy of them all. Apparently, colour hadn’t been invented yet. You can’t tell by these thumbnails, but the resolution on these early versions approaches that of a postage stamp.
Midjourney Niji 3

I had forgotten about the Niji models from back in the day. There were 3 versions. I don’t recall where this slotted into the chronology. Obviously, not down here. I’ve only rendered the newest one. I think this was used primarily for anime outputs, but I might be mistaken.
Bones Content 1: Video
This is a video render of the same prompt used on this page.
Bonus Content 2: Midjourney v6.1 Content from 34 weeks ago
Same prompt.

The upper left image reminds me of Kirsten Dunst. Again, notice the female breasts, highlighting Midjourney’s censorial schizophrenia.