1 - I think most people on this forum would say that the idea has some merit and especially if youre going to be doing poser work for it
2 - Obviously the name should have something to do with either her Legs, Kicking, or maybe the colors of her costume. I'm throwing in the name "Kick Start" as my suggestion. I thought of a secret Identity for her too, Lana Leggs, CEO of Leggs Pantyhose! She could be a rich Batman (Batwoman) type of superheroine maybe?
3 - I love her look, the only suggestion i might make is possibly an a couple of red ankle bracelets to match the ones on her wrist?
4 - I would say make her a very inshape Normal Woman, with toned legs, she's a great kickboxer sort of fighter. She wears special Nylons to enhance the power of her kicks. Perhaps they're coated with a special chemical to make her kicks super powerful?
5/6 - For a weakness? Well her legs are very powerful but the rest of her is just sortal normal. Hypnosis would work, surprise Chloroform would work, a villainess that came up with a neutralizing agent to stop her pantyhose from working properly (maybe reversing so she's weak as a kitten?) might be a start for neat weakness/villains for her to deal with?
Imagine if you please...
Picture 1-3 Are Kickstart going through her intimidation Kick routine Asking the Villainess to Surrender or face her MIGHTY kicks.
The Villainess reaseases a counter agent gas that interacts with Kick Star's Nylons. Instead of inviorating them with strength and speed, they sap her energy making her helpless.
Picture 4-5 Kickstart's Nylons suck the strength, energy, and will to fight right out of her. Too weak to stand she slumps to the floor barely able to move. The villainess (a chemical genius of some sort) moves in to humiliate the now helpless heroine.
(Other bad guys could be maybe an oriental martial artist schooled in acupuncture who can attack her legs and feet (maybe room for tickle stuff here) etc.... Dont build the fetish into the Heroine, leave the heroine 'Whole', build the Feitish into the bad guys and gals she faces)
7 - An imaginary City might be nice, i like the concept of Leg City , or maybe Leggs City (perhaps she's the ruler of the city/country). There's no reason for an Arena fight not to occur from time to time, say a Villainess thats into competive fighting regularly lures Kick Star into her Arena to fight her (possibly with a hostage like her sidekick?)
8 - YES! Sidekicks are great for getting into trouble, or maybe occassionally helping the Heroine out of it.
9 - YES! Paint her toe nails, I think Red would be a good color to start, though it might be nice to see her change them from time to time. Maybe even have her nail polish be part of her powers, a different color for a different thing, (Red for Strength, White for Speed, Blue for healing, etc...) Maybe the Bad gals can strip the polish off her toes as part of the depowering of her superpowers?
Okay you have my input i hope to see more of your superheroine, you do wonderful work.