>scene about Gihren's artificial newtypes accidentally left in on the Amazon broadcast but cut from the television one
>those artificial newtypes in fact never do show up

For me, that's the biggest indicator that GQuuuuuux had an extremely messy and/or rushed production. This was a plot element they wanted, had scenes for, but had to cut, and indeed did cut in the TV release. One cour was not enough. Two cours might not have been enough.