I honestly wouldn't be surprised if Ero transitioned into selling wallpapers. He's a naturally talented artist with an eye for perfection, but that unfortunately doesn't translate well when the ingredients of a well made VN also include strong writing and sex scenes.
The circumstances surrounding the Ch 4 released left me apprehensive about supporting Ero until he nails down a better workflow. However, the announcement of developing a second game when the first is far from completion isn't the best move considering he's a solo dev and already struggling with perfectionistic tendencies.
Demon Boy has some incredible potential to dethrone BaDIK with DPC's cult-like following, or even challenge Caribdis' abnormally high quality with Eternum. Despite being skeptical of Ero making changes to his workflow I do hope he completes DB and learns from it for his future endeavors.