Maybe I’m missing something here but what exactly is wrong with those pages? They look perfectly fine to me, the only issue I can think of is that the transition of Ami arriving at the Command Center is a bit abrupt and confusing but Naoko has never been good at scene transitions, the art itself is fine.
It's not bad - It's not good either. It's super basic.
While the expressions are rehashed over and over (Usagi and Ami have the same expression on page 3), there's no perspective thrown in, the camera/panel composition is always very close to the character, there's literally no work on the background (here it's one of the rare occasions, Takeuchi actually draws something like the game consoles), the last panels of the 4th page are
LITERALLY SCRIBBLES and so on and so on.
Not to mention, the pacing on the pages is a complete mess, there's nothing to show the flow of time (there are basic techniques in manga storyboarding that are used to do so) - you have no idea when Motoki goes out, when Luna starts pushing buttons on the console, when Ami goes to their secret dungeon and transforms into Mercury... It's not just the story that is fast-paced but the way it's storyboarded forces the reader to go over events happening within seconds - no wonder even 'die-hard' manga fans forget stuff that happens in the manga.
Looking at these pages, I remembered why the first time I read them I had a headache afterwards - it's a mess, there's no flow for your eyes or mind to follow, it looks overloaded yet empty at the same time.
Are you really suggesting Minako in Sailor V isn’t an iconic character? Seriously? She has way more personality than Naoko’s self-insert Usagi and I and a lot of fans think the manga would’ve been better off keeping Minako as the main focus like what Naoko originally planned.
And... all of that is only known to the manga readers ONLY.
I haven't read Sailor V, I have no idea what you are talking about. In this whole reboot (which is the MAIN focus), Minako hasn't had much personality moreso than the other girls. There has neither, as well, been ANY allusions or callbacks to possible stuff that happened in Sailor V because of course we can't deviate from the manga.
So again, who apart from manga fans, cares?
You do understand that in the end of the day, this is not a passion project but a business. If it makes money, they'll produce more stuff accordingly for the people who are buying it. If Crystermos was a huge success and had taken liberties in giving the Inners more screen time or personality, yes I could see the use and appeal of animating Sailor V but again no one truly cares.
If I understand correctly, a lot of people love Sailor V because apparently in the end, Minako receives a curse that her love life will be doomed?
Does this so-called 'curse', play any part in Crystal?
On the other side, the 'paper-thin' Minako of the 90s anime, likewise, gets a similar backstory - her broken heart over Alan is something that constantly haunts her throughout the series and from Classic, itself, we are shown her nonsensical demeanor is a façade to hide her tremors.
In R, while being over Alan, she still struggles to admit the reality that she has to find someone new.
In S, all of this culminates to the point that even though she's the so-called Goddess of Love, her love life is non-existent and a failure in her eyes, causing her to doubt her self-worth and capabilities as a Senshi and worrying about her personal life and future.
It's only in her two-timing SuperS episode's end that she finally gets a resolve to her character arc as she discusses with Artemis and he offers her a fresh perspective over her life.
As she acquires maturity and wisdom after exploring her own trauma, Artemis helps her to understand that life is all about trials and failures and it's OK.
She ends the episode by saying she'll lead her life by her pace, one step at a time till the day comes when she finally finds her special someone.
She ends the series by getting over the trauma of rejection and loneliness her broken heart caused her.
The 90s anime did a better implementation of this 'love curse' than the manga where it's like I'll always say, 'everything happens to look cool and edgy'.
Do the events of Sailor V play in any part in the events of Crystermos? No - so what's the use of it?
Can we understand Minako's personality and worries better by adapting Sailor V? No.
Surely they’d be worse off and be remembered as even more paper-thin in Crystal without them.
The first 2 seasons should have made people care about the Inners for these extra stories to have a purpose in anime format but they didn't, so it has no use.
By Infinity's end, these stories, regardless of their content, are completely irrelevant because said characters themselves in the last arc are likewise irrelevant.
These are short stories - not ORIGIN stories, which in their case do have a use even after the end of the main series.
If so, maybe we'd also get to see those powered-up Senshi weapons seen in the Final Act of PGSM again in Cosmos. 
