I still use V4, don't ever use Genesis or G2. I have Lucy and Sabrina, not interested in the offerings mentioned. Reasons are basically a mashup of what has already been posted, but to add my 'votes'

I don't like their mouths. Unique, yes, and decidedly away from 'stock' V4 which is great. That AUTOMATICALLY puts the character into aesthetic preference areas. I don't use Dawn either. I don't give a rats about the rigging and topology, I think she's ugly.

Their expressions in the promo renders make them look like spoilt brats, NOT someone I'd want to know. If I wanted them as for a specific character I'd definitely buy them, but as a general character for my runtime, no.

The hair sucks. Just an opinion, but lets down the quality of the skin. Lighting looks flat to me too...

I think you do good work. I don't think V4 is dead at all. Normal looking characters for any base are hard to find. Please don't give up!