I've supported this developer since the beginning. Not going to defend him.
I have to correct a lot of you. People keep talking about that it takes time to render. What the "blank" are you talking about, he uses Honey Select Studio/Neo. He doesnt use Daz3d, Blender, Poser Pro, or any other 3D rendering software that has more poly count then Honey Select. It renders on the fly. Set up the scene and save. No rendering required.
His proof reader, reads like 3 words a minute. Maybe slower. But the developer likes him, and understands the humor he is trying to show. So the corrections are solid.
So like some of your complaints, I too, used to complain. To him directly. He used point out the downfalls about other developers.
So her is little wisdom for you. Just relax. If and when it does arrive it will be great, then get your food and dig in. Because it will be another long amount of time before the next release. Monthly releases are not happening with this developer. If you get all worked about his lateness or missed deadlines. You can read the forums. This information is in black and white. Deadlines are always missed, his proof reader is slow as can be. It will get down, when its done. As for doing story first. I think he works the scenes out in his head. Then makes them. Think of him like artist. He needs the pictures first, then the dialogue comes next. Then he looks at it, sometimes going from point A to Point B things are missed. So then additional scene needs to be made with additional text.
So remember, relax, or you will start getting grey hairs, and two please don't refer to this developer rendering. It is an insult to people who actually use true 3D software.
I'm no developer, but from what I've read here over the last months it's basically this: The rendering is what takes the most time overall by far... ...so in general the process is something like this:
1) you build up an idea of what your next update will be about in general (if you haven't done that for the long run anyways, but even then you need some fine-tuning)
2) you start composing your images and render them ---> and that over the run of weeks
3) while your machine/s is/are occupied with rendering you do the additional stuff needed, e.g. writing dialogue, coding, etc.
So having the dialogue out of the way doesn't help that much, it rather delays the other stuff...
If someone with more developing experience wishes to add something (either approving or disproving), please go ahead...
PS: Your suggestion implies that he has someone else for proofreading and doesn't do that himself... ...while that surely is useful to have, we don't know for sure that he does, do we?