Yeah I don't think I've found a good substitute for vector art.

There's stuff for more expressive creative raster art with procreate, I think the capacity is there to deliver a good experience here but the first one to do it will have to solve a few problems relating into a more professional workflow and take on quite a bit of risk seeing as the consumer base (most companies) probably don't issue iPads to their employees. There's very little incentive to this when their consumer is content with existing tools.