^ ...what? The names are fine. Almost all of them are completely normal names, apart from things like Electra and Bismark, and to the Japanese ear, they actually probably sound pretty exotic. Take note none of the other RF games have had overflowing amount of "original" names either.
What, would you rather them ALL have weird, meaningful, or even just plain made up names?
On a more relevant note, Jaslyn shares her voice actor, Saito Fuuko, with the Masked Man, so if you want a sample of her voice, go check out Jaslyn's voice clip. I'm REALLY hoping she can do a good bishounen imitation.
^ What are you talking abut? All the other RF games have had normal names too. In RF1, we have Tabatha, Bianca, Melody, Lara, Sharron, Tori, Felicity, and Lynette . In RF2, we have Alicia, Julia, Dorothy, and Cecilia. In RFF, we have Anette, Iris, and Eunice. In RF3, we have Sophia, Dahlia, Carmen, Colette, Karin(a), and Marion. These are all perfectly fine, normal, and at least not unheard of names. And those are only the bachelorettes.
Edit: Went and looked a couple up. Apparently Rosalind is a more well known name than I thought and was actually pretty popular in the 40s. Pia is rare, but apparently popular in some places in Europe. Also, take note that while Mei, Uzuki, Sakuya, and Yue sound exotic to our ears, they're just normal Japanese names. I've heard all but Uzuki used multiple times.