It took him over 5 years to complete the fic. I'm glad it is done
with Naruto and Sakura married and having kids, Itachi's kid as Naruto's successor...
However, most of the OCs weren't neccessary from the start. It possibly why the fic wasn't complete to begin with. The Seven Swordmans were fine, but with the others later on... meh.
I take it Mizukage must finally be complete, It was a great fic, but there were too many OC's most of which were quite simililar, and not really very memorable, making it a chore to remember everyone, This made going back to the story after a break very difficuly as you had no idea who anyone was. As you mentioned most of them were unneccessary,.
Now that it's over mght try to read it once more.