It's been years since my last post here, but I feel it is appropriate to say things now, Since one o the
"Fans" told me that it was wrong to compare ongoing series with Finished one that has Anime (Even though FT achieved all those things WHILE BEING ONGOING), Now its done and has 2 seasons, so no excuses.
warning, This will be mostly negative post, but I want to assure you I have nothing against people liking this manga, everyone have right to like what ever they want, BUT claiming it's better than what others like without substantial proof and mocking them and things they like "at Their doorstep" is just..


(That is what those "Fans" often did, until things got so bad they could not even show themselves).
Ok with that said here goes:
I will start with 2 only positives I have, Art is still great and I hope it wont deteriorate, Even though I dislike reusing character models for SAME TYPE characters, they are still great to look at. And second is fans mostly proved FT/Hiro haters wrong, Most fans called out flaws and did not act like mindless followers that FT/Hiro haters claim us to be, there are some those too, but majority understood what is poor writing and called it out.
Now begins the negative

This manga was waste of time both for Hiro and readers. After dropping out of it, I mostly skimmed through chapters barely reading it, After reading a chapter I skimmed through I did not fell difference, reading sentences felt like wast of time, Dialog literally add nothing.
One of it's biggest flaws is, it does not know what it is Dark Story, Fun Story, Tragic Story, Satire Story, Free Adventure Story, Deep Story, Simple Story or bunch of them. it tried to be all, and failed in all of them, which led to it being directionless, and more made up as it goes in comparison to FT. for example,
Witch's death, it was poorly executed and felt forced, Beccas leaper conveniently did not work to induce drama,
couple chapters were painstakingly telling audience that it was for Shikis and co's growth, to teach them let go, not everyone can be saved, as long as you have them in your heart they are there and etc. 1 arc later she is back for good, thus all the messages, emotions and growth were thrown out or were complete waste of time. some defended it by saying it was a bad decision to begin with, so undoing it was right choice, but even that was done so poorly that all that was supposedly good that came out of it (like character growth) was undone, it also blatantly showed Hiro's incompetence, Fixing one bad decision with another bad decision.
This supposed Dark Story
ended with more characters Alive than there was at the beginning, Characters that were dead from first chapter came back to live.

Main Characters never felt as a team, more like bunch got thrown together. Most of the time One Arc characters felt better than main ones, but they are immediately
forgotten and relegated to glorified cameo (OSI).
"Fan" claimed Shiki to be this
New Gen protagonist we never seen before, but he is most generic in both in character and design, I literally seen 2 other ongoing mangas that had MC who looks like him (Even glows as well). His uniqueness was scraped early on, him
being engineer\mechanic and it was giving to his secondary character Wisze, and that turned him into another maker user

.
All the talk about planing beforehand was lie, Many plot points felt artificially forced in rather than being part of a narrative, like in FT we had 10 wizard saints, we met 8 of them, 2 were never even mentioned (they still might in sequel). but here we had
12 Heavenly Knights of the Dancing Sakura (giant statues), how many of them we met? Only one, Xenolith. Hiro added him and 3 new members, to Universe 0 OSG he did not think, may be these guys would seem more important if they like Xenolith, were Heavenly Knights.
Final villeins were lackluster powerhouses and disappointing, similar to Acno in final arc.
Twists, right this manga has twists, Shiki being Ziggy I called it at ch 12, everyone knew Chronobecca the moment they showed her. it is not even good twist, one that you see coming but it still feels right. it is just for shock value, Oh it was their
future SON 
and done

.
Through it's entire run this manga could not achieve anything, No great sails (only barely decent and thats because of Hiros popularity), no awards. no spin-offs (Heros does not count, its more of a special crossover). same for anime, only achievement
I heard about it was 10th most watched Anime in late slot in Kanto region on one weekend (don't remember date).
Also lets not forget that space is a mere window dressing, it is there just to make things look grand,
Each planet felt more like neighboring town than different environment. In FT Celestial world, Edolas and even Elentir feel like different worlds with different rules.
Friendship theme was so in your face and obnoxious that it made you
forget the "Machine are people" theme it was going for.
You can even tell Hiro himself got bored by it and started halfassing it.
In conclusion I want to say, this manga was worse than bad it was Nothing.
Let's see what future holds, and I hope next work won't be like Hiro Mashimas Space Manga.