I like them. At my former job we had a few opportunities to do all kinds of stuff, and blah blah blah. It was a weird and exciting time.
Years ago I posted something like "just about anywhere a small block would go, on wherever you would expect to see a small block... if you want to do a gen 3, you can". I still kinda feel that way.
Do I want to see one under the hood of my 69 B body? Nope. I chose the B/RB engine family a long time ago.
That doesn't mean I wouldn't be open to it in some other future project. I have three of them...two in drivers/workhorses, and one that I rebuilt stock, other than a mild cam, painted turquoise, and threw in the corner. because you never know what might come along.