At least Dawn got a coat and scarf in Platinum. Wonder why she isn't wearing any leggings though?I always thought that it was a fashion statement, similar to how Hikari (Dawn) wore skirts in D/P/Pt despite the region being prone to cold weather. Personally, I always wondered why Suzuna (Candice) didn't have a Manyula (Weavile) on her D/P team.
Candice also had a Medicham in the anime, which isn't an Ice type. I guess Gym Leaders don't always have to stick with their type. Or maybe Maylene gave it to her, since they're friends with each other?