>>59416205She's memed well beyond the company's actual reach and she's well-liked by other vtubers and artists. It's probably wise to harvest some of her personal recognition and direct it towards the company (and give gen 2 more of a clear identity that's not just Pippa/Lumi's shadow). The design is also a banger and she's a good mascot, the voice and mannerisms are just right for marketing. I mean, just look at her.
She's also a good indicator of their hiring goals/limitations and what they can offer to a potential applicant. Anybody else and it would send a different message.