Thanks for weighing in, all.
Clearly I need to take pictures and show. Marilyn, your answer was instructive. If they work for you in petite and you are 4 inches shorter than me, then that might be my problem. They basically look like skinnies on me because my calves take up the so-called flare. Thinking this means the length really is wrong and I should go for regular. But I will probably be "between" sizes at 5'4".
Marble, I am in Canada. We don't have the short option here. Maybe I should order from the US and have a fab friend send it to me. Sigh.
Una, I have another pair of cropped flares from BR (the lighter ones in my finds) and they work on me. They're not leg-lengthening, that's true, but they are JFE.
LisaP -- I really like the crops. First, like Viva, I've always been a secret fan of crops and ankle pants, period, even though unlike her, they don't flatter me as easily. Now that footwear has caught up to help "close the gap", I'm completely on board! (Except for our deep winter when they are not warm enough, no way no how!)
I guess I love any new denim silhouette and since I live in denim about 9 months of the year, it is absolutely worth it for me to play with this trend. Updated denim is one of the key ways I can keep my style fresh. Also, I like the crops because they show off footwear. (Yay, footwear!!) I also love showing a bit of skin at the ankle as soon as that is practical. It's a real boon because it provides a bit of structure and it balances light hair and skin on top. (Can you tell I get sick to death of my dark bottoms/ footwear combo all winter. Ugh.)
The resin jean is a different fabrication -- more comfy and lightweight than the fall version so easier to wear into the warmer months or on summer evenings. Also, I like a darker wash.
As for playing with lengths -- well, it's actually no different than my usual. I always have to hem or adjust the lengths of pants. This is my fate at 5'4" -- regulars are too long and petites too short/ don't fit my rise. So having to order a bunch of different pairs and not hem (or hem, if it comes to that!) does not seem like "a lot of work" to me. It's just par for the course for my body type. Pants are work, full stop. Everything requires alteration and if I find a pair that doesn't I think I got off super easy! So it's all perspective.