I posted this in the stars thread but if kind of fits in here so i'm posting it in here lol
I tend to ignore mechanics when I read, unless i'm proofing for people and I have stopped doing that, for fanfics anyway. When I critique it is mainly plot and storyline. I take into account a few things when I read a story and one of them is the age of the writer and if English is their first language or not.
It might not be fair to pigeon hole with age but if you are 16 and this is your first fic, i'm going to ignore a lot of the grammar errors and plot problems because they are young and it's their first. If you are 30 and this is your 40th story, it's a little different.
A good story is a good story though, so if it's lacking on grammar and has a lot of weird things in it I can easily overlook that if it's a great story that draws me in.
That being said I think on this rubric we should include age and english as a second language or something because if this is going to be used as a guide to best of the best, some of those type things need to be taken into account, at least I think so.