>>283060995 (OP)
Wdm by Hinata's legacy? Are you talking in universe or about what she elicited among fans? If it's the former then just read the manga and watch the canon movies and there your answer. If you're asking about the latter, Hinata's legacy is that of an (unfortunately) rare instance of best girl winning in a high profile story, and this isn't talked about much but I believe her getting with Naruto was one of the final nails on the coffin of the tsundere archetype being considered the de facto winner. Also giving shy girls a bit of representation, she's also one of the Naruto characters with the most fanart renditions, and finally, her victory was so welcomed and unexpected that some subhumans are still crying about it to this day, as you can see in this very thread.
>>283061471
>>283063320
The cosplayer thing is also a good point. I remember having read multiple times that she's one of the most cosplayed characters ever.