Thanks for all the great ideas, everyone! So many to ponder and try.
Thistle, you're absolutely right that these are classic. I think we've been so awash in looser, longer sweater shapes for the last year or so that these seem a bit at odds with current trends, but I think the key for me lies in mixing these with trendier pieces.
Greyscale, I keep coming back to your idea of an edgier scarf. It made me realize that my scarf selections tend to be more on the "pretty" side. Or geometric prints. Maybe I should keep an eye out for edgier scarf prints! I just purged a few old scarves that don't seem like me anymore, so maybe there's room for a fun new one.
I love the suggestions for layering with moto jackets, etc. This type of sweater was such a uniform piece for me a few years ago that I sometimes have trouble seeing it in a fresher light. Thanks for nudging me out of that, everyone. I recently saw a beautiful cobalt blue sweater like this and was drawn to it, but didn't investigate further because it didn't seem "edgy" enough. But not every piece in my wardrobe has to be edgy, right?
Scarlet, I will definitely keep this one at the very least. I discovered this morning that the green one has a tiny moth hole in the sleeve. I'm wearing it around the house today instead of my usual hoodie. It's still wearable and I'll probably keep it anyway. If I scrunch and turn up the sleeve, the hole is not visible. I reluctantly gave away a nice heathered turquoise sweater like this last year (it was JCrew from years ago) because it had a faint stain on the front that defied cleaning. I still think about that sweater. I guess that gives me a sign that this style is not something I should abandon.