How I Met Your Father
It seems there's some talk of a pseudo-spin-off in the works, being written by a couple of people involved with This is Us.
https://www.yahoo.com/news/met-mother-dad-spinoff-works-225737361.html
It's not a traditional spin-off, in that it would strictly be using the format of a central character, in this case a woman, telling her children how she met their father. This is also unrelated to the failed pilot for How I Met Your Dad, but Carter and Craig would have some involvement, though the extent is unknown at this time.
What I kind of find funny about this, is that I've just gotten into This is Us, and I find that it's more or less what I originally thought How I Met Your Mother was about. For the longest time I thought HIMYM was a campy, formulaic sitcom; about a man in the present telling his kids - Ted, Lilly and Barney - about how he met their mother, with that part of the story being told in flashbacks, paired with present day stories. And until I finally watched the show, I couldn't figure out how the identity of the mother was somehow being kept a mystery in that scenario.
And now, This is Us uses a very similar framing device to that mistaken concept; showing both the present day lives of this family, combined with flashbacks to when they were growing up, and there's a bit of a mystery about the father's fate.
Some aspect of that actually kind of inspires some interest in this new project; and I would actually be willing to give it a chance, even after Carter and Craig screwed up the original...
“He lied to us through song! I hate when people do that."