Potential? Sure. But considering that their art hasn’t improved much in more than half a decade perhaps that’s stretching it. They have their figures consistent now and a good understanding of anatomy, but there’s no understanding of lighting and shading still and you can tell they haven’t ever challenged themself to go further.
Want my honest recommendation? Take some art classes, learn the full basics down to contouring and shading, and start doing studies instead of *just* horny sketches. When you’ve developed an artist’s eye and expanded your box of tricks, it’s not even comparable what kind of things you can do.