- Let's not forget that it was
Takeuchi who decided to remove the 3 Outers of the story at the end of Infinity despite HaruMichi being popular.
Now, why do the 3 Outers take baby Hotaru and go away from the girls at the end of Infinity? I don't know.
During their chapter in Dreams, Haruka mopes that she can't see Usagi's smile (barf!) as if there's a law prohibiting them from frequenting the girls, then somehow they just realize they want to be together with their princess and teleport to Tokyo I guess.
All for the sake of drama and no logic.
- Let's not forget that it was
Takeuchi who was selling that Dreams was going to be about Chibi-Usa and Helios and the dreams of the girls.
I've said it before but Dreams feels like a soft reboot, Chibi-Usa finding her first love, the Inners having their own mascot familiars giving them their individual transformation items...
The first half of Dreams is mainly about Chibi-Usa and supposedly Helios/Pegasus (even though this goes no where) and then once the Outers appear, it's again all about UsaMe.
The girls don't even meet Helios in the manga, let alone knowing about his existence except Jupiter!
Helios doesn't play a role in the overall story and there's not even a reason why he takes the form of a Pegasus.
The 90s anime handles it a thousand miles better with the Golden Mirror, the mystery of Helios' origins, the girls being wary of Pegasus, Nehenelia and Helios' dynamic etc.
It's always Toei's fault, it's always Toei who screwed up, it's always Toei who made the ridiculous decisions, it's always Toei who is the villain while Takeuchi is the eternal victim.
And like you said, the first half of Dreams is filler, the plot doesn't go forward and sets the base of a set of concepts (Dreams, Lemures, Mirrors...) to forget all about that.
What are Lemures? Why were the Dead Moon feeding off of dreams of people? What is Zirconia's role and what happens to her considering she disappears from the story altogether? Why - Shaddup.
The same thing happens in Infinity.
How was the anime staff supposed to come up with a story when the manga was going no where?
Make their own thing like in Classic or S for Takeuchi only to complain in the tankobons how her vision was distorted and how relieved she was that the denatured aspect of her story by the anime wasn't disliked?
For the longest time, the manga has been absolved of any criticism because 'it's the original story' and only the manga counts, the anime is made for kids