Find your niche.
I just read the fic. And I must say that the characterizations were spot-on. :o The author writes really well, and had really creative ideas that were believable enough to be canon.
I don't like how elaborate the author's fan ideas were written within the last few parts, though. And Rarity's story felt a bit tacked-on (granted, I don't remember her losing it in the first season at all) after reading it, but I appreciated her characterization in it nonetheless.
Pinkie Pie's story really hit me, as well as Fluttershy's. And I agree that the ending was touching. I haven't read Alicorns: Blame, though.
I think this would probably make me read more MLP fanfics from now on. xD The series has such a diverse fanbase, including creative ones who write fanfiction.