Story:
Slice of life is my favorite genre so I've seen tons. I'm used to the slow, tepid pace of many slice of life anime. But Glasslip manages to be excruciatingly slow, yet at the same time frenetic because of the way they jump from character to character. You can watch the first episode, skip over to the 9th (where I am currently dropping this anime) and have no more insight into what is happening that watching the first five minutes of the first episode.
I started watching this after reading the description about glass making, thinking at least this would be an interesting look into the craft, but there is so little about glass making it's almost like false advertising. The actual substance of glass plays a slightly bigger part. But it's like a small tool they use try to fuel the story plot. If you watch you'll see exactly what I mean.
Art:
The art is the only thing I enjoyed about this show. Not specifically the character designs, but the background settings are beautiful to look at. Especially the way they set up to reflect the different times of day. It's nice to look at.
Sound:
The sounds fit what is happening at the time, but beyond that, there isn't much to say. They don't stand out as anything other than fitting, not above average or memorable. None of the songs or soundtracks stand out.
Character:
There is no character development. At all. You find out some things, but not much. What you find out they try to make mysterious so you'll want to keep watching, but you find out so little it's very uninteresting.
This is slice of life at it's worst. They focus on the absolutely wrong time of life's moments.
You see the characters sitting, or sitting at eating, or sitting and talking, or sitting and looking at the sky, or sitting and reading.
That's basically all they do, except you can substitute sitting for lying down or walking or hiking. It's so utterly boring and uninteresting.