On 3DS especially, they’ve featured fairly strong stories, character motivations and more, but since the jump away from 3DS they’ve focused more so on fan-service and jokes between characters, and Reflexions is an almost natural path of progression for the series. I’ve enjoyed Senran Kagura games in the past.
Other characters will be DLC, with only Asuka being present, and with only a small handful of different conversations to have, and only a small amount of items to massage Asuka with, it’s difficult not to wonder if Reflexions isn’t solely focusing on fan-service to sell itself. At only £8.99, I didn’t expect Reflexions to be bursting with content, but you quickly fall into repeated conversations and mini-games as soon as 15 minutes in.