1miau, what would you consider a 10 out of 10 Block Explorer?
Good question.

I don't really have an answer for your question but as we all know
nothing is perfect, I believe there are always few improvements to implement.
Maybe Blockchair could also be rated 9/10 but for whatever reason, it's currently 8/10.
Loooooool but
you added Blockchair to the list

Yet you talk like someone else rated it only with 8/10

I also believe it deserves a better mark. And, changing it is very simple, as it's only up tp you for 2 reasons: (1) you are topic's author, thus you can change marks anyway (smile) and (2) this explorer was suggested by you, thus you are not changing the mark against someone else's will, if you believe it should have a better mark.
From my perspective I'd go even more far than 9/10 and I'd give it 10/10 for the following reason:
it's the best one we have! As a consequence, all other ones will be compared with best one, right? Therefore, if it is best one we have, it actually deserves 10/10, no matter that it can be improved here and there. If another explorer will come up, having all Blockchair features and also some more nice additions then it will be marked with 10/10 and change Blockchair's mark to 9/10. Does this make sense?
1miau is tired, dear GazetaBitcoin.

And it's lot of BBCode which is quite a mess sometimes (I believe you know it from your translations list.

).
Oh yes, I know, I know...
You are right, I need to spell
PrivacyG's name properly, my dear GazetaBitcoin.

I'll do it correctly from now on and in Romanian it's
Intimitate(a)G's (because
PrivacyG might be female

).

You are also right

"
Intimitate" means "
Privacy", while "
Intimitatea" means "
The Privacy". And it is, indeed, a substantive of feminine gender. Unfortunately, the gender of our nyms don't also reveal our real genders

Yet I have my reasons for also believing that
PrivacyG is a chick

Now it came into my mind to vote
PrivacyG at Miss BitcoinTalk category during BCA 2023.
Ohhhh, shoot, I forgot that icopress took
most wrong decision of his entire
life (facepalm)

We could do it like that, if it's ok for everyone [...]
Any opinions, if the layout above is decent, are welcome.

You trimmed it well, padawan! And it's almost there! 99%! I will explain and also propose a solution for having it perfectly fitting the screen!
Take a look at this (this is how it shows on 1080p):

As far as I see, on 1080p, the comments section show only 96 characters (I counted the characters from this string: "movement of our balance. If using no-JS, click a random TX, Block or Address and edi" -- which represents the visible part of the text). The line containing "edit" word has 87 characters. The other truncated line (from BitcoinWho'sWho) has 98 characters (the word "as" is not shown). As a consequence, we are in need of 2-3 more characters for "Comments" column.

As shown in the above picture, I think we can shorten "Usefulness" column with 3 characters, by deleting that emoji. Having "Usefulness" column shortened then, maybe "Comments" column can be expanded with 3 characters.
I hope this helps.