Your game always had potential, and it was always on the higher ends of AVNs to enjoy casually. But with 0.3, it's starting to ascend into that higher level where few, if only one other AVN as far as I'm concerned, has reached: this story has a theme, your Main Character has a Leitmotiv.
I'm talking, of course, about his powerlesness, his inability to save the people he encounters, and he's attempts to overcome that. I think the climax of chapter 3 was rough around the edges, but it had glimpses of genious througout. I think you will be fine going forward, as long as you keep in mind that core conflict the story has revolved around so far: MC wants to protect those he loves or meets, and so far has had as much failures as successes.
Personally, I'd love to see explored how him gaining greater flashy cultivation power doesn't instantly translate into meaningful power to save people.