Whimsy is important--thanks Tom for reminding me--so I added a multicolored I-cord border despite being tedious to knit. And unvented a slight faster way to work it, which I will post.
The Blanket, posing provocatively on my queen bed
I reknit the border a few times all told to get the tension right, it kept loosening up as I got bored went. I surprised myself Sun night when the last stitch was truly cast off. I'd already worked most of the ends in as I went. Of course then I had a dream that they were still dangling, because my brain is a sadist. I got the last laugh, I woke to a fully finished blanket :)