You look great in your movie-dinner outfit and I can easily imagine how those boots sparked joy! I like the texture of the new sweater and the deeper green.
As a gamine who also wears long cardigans against Kibbe advice, I say, always go with what works for you, personally -- and some long cardigans do work for me.
Not all, though. And not for all purposes. I have one long cardigan that I use essentially as a housecoat or loungewear -- it's to ward off chill on cool mornings. I'd bought it for regular wear but it quickly found a different role in my closet. Why? Because it has droopy pockets. You can even see this a bit on the model. Also, it tends to pill. However, I shave off the pills and continue to use it and will continue to do so.
Meanwhile, another long cardigan with a hood that I bought much earlier in has never gone out of regular rotation and by now has hundreds of wears. There is something unique about the shape of this one that makes it not droopy and weighed down.
I am with Carla that in the photos, this one looks as if it may have run its course for regular wear, or perhaps it's just that the fit is off a bit -- sleeves too long, shoulders too big. But if you find it useful for at home because of the cozy length, they why not keep for a while? Assuming you have storage space for it.