That's a nice thread... that reminds me how much I'm bad at commenting. But not that bad.
But I think too when commenting it, it's nice to use "I" sentences, so it's not a fact, but an opinion.
"I think it's too dark" is probably better accepted than "it's too dark". Well at least, it's probably better for people who don't make wall and haven't got any idea about the difficulties to make something... and well there are also things that depends on a person's taste.