You've done a brilliant job styling this. I prefer it with the V for yang, as others have also said, and I agree with you and others that these cardigans are tricky for many of us. I usually do as Brooklyn does -- I stick to long duster length ones or short knit military style jackets (or denim jackets for warm weather topper) but I do own two of these. One is a rescue from my late mother's closet -- part of a twinset -- that I wear as a top rather than a topper -- it's undeniably sweet but also bright and reminds me of her since she wore it so well. So.
I also have a charcoal merino V neck short cardigan which is a bit more "grandpa" in feel -- I don't really wear it out of the house, though. I could imagine styling it with a white shirt and BF jeans and stompy boots, though, for a sort of tomboy look.