Lost Canvas is epic!
I could end here my rewiew, because it is very amazing.
Saint Seiya epic to the very meaning of it.

The stage is set 200 years before the original series, and so it could be considered a prequel; but you can watch the show without ever seen the original.
Like the original the main character is the Saint(Cavaliere in Italian) of Pegaus, this time Tenma, but like, and much more than, the original the "side" characters have a great role to aid the protagonist to fullfill his task.
Altrought not reaching the perfection of "Full Metal Alchemist: Brotherhood", where no minutes go wasted, and with little rust in the fist episodes, Lost Canvas has a good plot with, pratucally, no holes, and the secondary characters, as i said before, are not wasted or under used(also if you can feel, sometimes, the cuts from manga transposition).

Being a prequel you could be fearful to see something like thousands of citations from the orginal serial, and instead...
Instead they are, but gently inserted in the plot, or show to the watchers that alredy known the story and the author(Kurumada could draw like a child, but his ability as storyteller is unmatched) never throws an original anime reference without necessity or for the sake of the pubblic.
This is how a prequel is made, and Lucasart and Dinsy should learn from this next time they need to make a prequel.

From artistic point of view, i like the cloths a lot, light and shades are wonderfully painted, but probably details are inferiors than original(masked by a better graphics).
Action scenes are functionally and fun to see, i like the stop scene when particularly epic.
Not knowing much about animation techniques, i must constate that the scenes are fluid and seem realistic.
Only sometimes, mass scenes are a little less definied and backgrounds a little dull.

About chacters, as i said, no one is under used and this Athena is very better that original's one.
Sasha, unlike Saori, is still a young girl, but she does't need her saint to be saved at every episode.
Tenma-Pegasus is still the main character but exactly as Seiya-Pegasus he need the help of his friends to complete the work

A note on italian traslation: i have like it, but not in the first episodes where was a strange mix of english and italian term.
if you, Netflix italia, wished to translare more adherently to Kurumada's terms, you could simply translate them in italian.