I've been writing VN style scripts for quite a while now, so I'm going to give you my opinion on this.
You've clearly gained a decent sized following, and most of the reviews are very positive. You've got the fan base, now work on another VN and try to get a green light on Steam. That's where you make your money. I don't know if charging for certain choices paid off, but if it did, good on you.
1. Give your fans a taste
2. Let it simmer
3. Make another VN
4. $$$
My main issue would be the writing. Not to be a dick, but it's not that great. It needs more of a descriptive nature. As stated earlier, I've written quite a few in my time. If you need some form of assistance, I'm all for showing you a few tricks with writing. I've got a few small pieces you can use as reference as well if you'd like.