When it all comes down to it, her suit has never been practical in anyway.
1) Her eyes and mouth are exposed. Not so much a problem for Batman when he at least puts on eye liner to make him more mysterious, something Kyle doesn’t even attempt to do. I know covering her mouth would make her look like Black Panther but she did come first, which leads to my second point...
2) Why not use a hood? I get the cat motif but the ears don’t make any practical sense. Again, with Batman, they serve a point when a writer chooses it to be so. A burglar suit should never be “for the sake of it”. She got her nickname because of her skills, not her costume.
3) Leather? Forget the sex appeal. Being a thief and wearing leather makes just as much sense as a liberal in Alabama. How in the hell can she make all these jumps and kicks and sneaking around wearing a material well-known to be very restrictive?
Hate me all you want. Her suit needed a far more drastic change than this.