Next Dimension is good but too slow

I wonder why.... I know drawing is hard but it's too slow. Lost Canvas has already ended. Next Dimension is still not even half-way finished.
After looking through the past chapters, I have a feeling it has to do with having too many ongoing character plots going on at once. Let's think about this we have:
-Tenma/Shun going through the Temples
-Syikyo going at his own pace with the past Specters attacking with Ikki following in the background
-Shijima/Baby Athena being chased by Cardinale with a false Pope
-Cain and Abel planning something
-Touma/Marin with Hyoga there as support for Unconscious Seiya
-Artemis and Callisto
-Hecate and Chronos overseeing the time travel
-Shion and Dohko since they will play an important part, being the only survivors when all is said and done
-Pandora and Alone
We haven't even put Shiryu in the equation and this isn't including, the other Judges, and the possibility that unnamed Gold Saints may play an important role and Izo.
All of this is happening
at the same time and while having this many threads isn't impossible to handle, it is no easy task to balance them especially when it involves a visual medium without it feeling like its going all over the place.
I love Next Dimension and the massive amounts of Shun it has, but there are so many things that I wish have a conclusion. The only thing we got is Ox is dead.