Now to your questions:

1. The article isn't that long, but if you did want to cut down on things, I'd honestly suggest uploading the Groves Counter information as a supplemental and expanding on it, like for the ACS page. I also think the Professor sections was a bit unnecessary, but maybe other readers not as educated in philosophy need that more than me.
2. I think it's done well. I actually would have wanted to see more explorations, it's a really cool world to explore.
3. Addressed already.
4. I don't think anything was rushed
5. I haven't read the David Personnel File yet (it's really long) so the footnote about him was needed for me. In general, I'm not usually a fan of anomalous members of the Authority, it can come off as OP for just the sake of it, but it did not bother me here
6. Yes
7. I can see the Sea of Forms being used, and the Groves Radiation, by some authors. Although if you wanted Groves Radiation specifically to be more impactful to the lore, I'd suggest doing what I mentioned before about a supplemental/ACS-style page.

exists

"exist"

SWIMMERS; requirements

Change colon to period. Capitalize "Requirements"

Further context will be provided as needed during training

Missing period.

Project SWIMMERS

I really do not like this name lol

have proven

"has proven"

hellenic

"Hellenic"

Each personnel in the outer circles is to face at all times.

Face each other?

A brief summary of the process is as follows:

It might be interesting to have a simple diagram of the ritual circle.

participants be

"participants will be"

physical recording is impossible

What about the ideal of recording? loljk

your local Office of Information Records and Security.

Incomplete sentence.

Named
Supervising

Lowercase

themselves

They see the form of themselves?

they decide to rent some rooms using S-7’s credit card

Why did he bring his credit card with him? And how is this possible?

After their stay expires

How long were they in there?

they begin heading once again

Well why did they stop randomly in one of the rooms in the first place?

must be their objective

I don't quite see how the gear fits into the idea of necromancy, presumably with organic beings.

how this was accomplished despite the lack of wallets is unknown

Well they had no problem pulling out a credit card earlier, so I don't see why a wallet would be much of a problem.

Team #C1 personnel

I mean, my instinct would be to have some poor CSD sap eat it first in case things go wrong.

Research into the unique and almost ideal properties of the food item is ongoing.

Rephrase this sentence.

planning

"planned"

Put a coma in between the two involved research personnel instead of a -

RPC-009 is an extra-dimensional location in which the physical manifestation of most human (or otherwise) concepts exists.

RPC-009 is an exra-dimensional plane/(or location) in which almost all mental concepts exist in physical forms.

While Access to RPC-009 for the retrieval of said concepts is possible, it is considered highly dangerous.

Such Entry methods are only to be performed by qualified DOC personnel, and must be immediately shut down should the Groves count reach critical levels in the vicinity.

Aaberrations following ritual
throughout document change this

Said rituals are only to be performed by trained personnel of the DOC.

instead of saying "said rituals" give it a cool official name. Describe the safety measures that the personnel have to use during the ritual and what equipment they must have.

All those of the victims that sustained to the ill-effects of the Aberrations

—For safety measures, —all tests in the wing? the entire site? will be shut down once ambient Groves reach a count of 60 Vi. Testing may resume once ambient Groves reaches (idk, 10?).

There is no known pattern or general list of what they may be,

you give a general common list directly after saying this

how is a dimension semi-physical? once you are in the dimension is everything permeable?

This method, alongside RPC-009, have proven to be extremely dangerous to personnel for the following reasons:

this should be in the safety and handling usage and most of it already is. It gets too repetitive with you telling us that accessing it is dangerous in the abstract, handling and description.

But these actions can also simply be the thought of them, or have been actions that once took place,

Should all steps be followed correctly, the ritual will activate, and the consciousness of the sleeping participants

what sleeping participants? mention them in the ritual steps

Within RPC-009, personnel may attempt to find and retrieve a certain ##orange previously determined## -1 instance

this appears to be slowly moving towards the East.

Would there be directions in this place? ones that we can discern?

as Team #Y3 have all unanimously decided to take a small trip to New York.

feels out of place

S-2 was found in the floor staring

on

appear to have taken a texture similar to that of the test subject.

describe it again here, maybe in a different way. Stone can be rough, smooth, many different textures.

The effect of such surreal visual anomaly is also believed to have caused tremendous spikes in Groves Radiation,

if it was a colour that we can't see but still existed Idk if it would cause the radiation. If it was one that did not exist naturally however I think it would.

- Is the article too long or does it draw on in some parts? What could I cut out or trim?
It's a good length currently.

- How well do you think the core concept of the article was executed through the collapsibles?
Good, better in the interview than elsewhere, and the expeditions better than in the previous candidates.

- Does the ending provide good closure? Do you feel like something is missing?
It's good

- Did anything feel rushed?
Tighten up the safety and handling like I suggested

- Did the inclusion of David feel forced?
It's fine

- Does the article feel consistent with itself?
Yes.

- Do you see the idea of the Sea being used in any other articles or contributions to the site?
Yes.
What about Groves Radiation?
I think it needs it's own page where you develop in more depth what kind of things it can cause, right now it feels slightly underdeveloped in it's possible applications to me. I can def see it being used in the future though.

- And finally: Was the article boring? Did it feel like a big piece of exposition?
It's good, I think I would enjoy the previous candidates logs more if there was a bit more low acs wacky description like in the interview. Again it feels really weird that they have directions like east and west in a plane like this.