The world is a much dangerous place in these days. So here are a few things Catwoman should use (and a few things she should not use) as a comic hero or villain (or something in-between):
A: She needs something spikey & sharp on her knuckles and boot tips... As a cat living in a dog-eat-dog world, Catwoman would benefit from having something sharp to inflict more damage to her punches & kicks. Not necessarily something huge like Wolverine claws, but something small & spikey that would inflict a bit more damage, and benefit her while climbing & falling.
B: Something on the end of her whip other than a small string or "cracker" to make her whip crack sound louder. Her whip needs to do more damage and have better grappling ability. Having something like small knots, steel balls (stop what you're thinking), or star-like objects on the tip of the whip strands would help. (But not limited to those suggestions)
C: A small bit of armor. Even a little bit would help.
D: Some type of gas or spray. It's a thing that felines do. Have you ever experienced the bad sensations of cat spray, catnip, or cat litter? It can be atrocious. Even skunks are feline, and their spray is intolerable. I'm not saying make Catwoman disgusting. But some type of spray or gas would be beneficial. She actually used something like this in last month's issue of Catwoman. Even pepper spray would work for her.
E: Running shoes/foot covering that are light-weight and have cushioned, no-slip soles. A must for anyone climbing, running, fighting, and performing acrobatics quietly; aka, a must for any cat-burglar.
F: NO breakable goggles. The glass can impair vision. And when broken (as we've often seen in recent years) the shards of glass can cut into the wearer's eyes.
G: NO belt. It subtracts from Catwoman's feline silhouette appearance. Her outfit should be as accentuous and sleek as possible with very little obstructing her figure as possible. That's just the way it is. Felines are smooth, sleek creatures, and rely on being soft, sleek, lightweight, and flexible figures.
H: DO give her subtle, form-fitting, built-in pockets & attachments to use to carry & hide her accessories. For example: remember how Catwoman's whip easily attached to her thigh in Arkham City? And also think of the pockets Jean Grey had on her thighs in the 90"s. You dont have to have belts & straps in order to carry weapons and accessories. Catwoman would be more sleek without the belts & straps.She used to tuck her suppiles in her opera gloves & thigh-high boots in the 90's. That was okay. But in these modern times, I think Catwoman can use something both more modern, more form-fitting, and more practical than what's been used before.