Thanks for expressing interest. It's always nice to see a positive comment.
1. An unfortunate honesty, but since I am taking so long to see this game to completion, I will not be able to add as many predators to the lake as I would like. At least 1 more is still planned, which will be the current Mermaid's mother, but it won't be as involved as you suggest here.
2. I tried adding a blue/black cover with transparency over the images, but when I asked for feedback on it, they said it only looked like a dark filter was put over the image while it still looked like daylight outside. Perhaps poor planning, or just lack of knowledge, but I decided early on that it would just be sunny outside while the predator is awake, so every image is like that. If I were to add a 'dark' version of every outside image, we're probably looking at a 33% file size increase for the game. I don't have a way to edit each image and have it appear darker, each one would require a new image.
The simple Craft Bikini menu is about as complex as crafting will get. There are Consensual predators who teach you new ones, but I don't plan to add anything like an inventory to the game.
3. Afraid not. There are times where I might like to make it an exception, but early on it was suggested to add filters, and if each scene is confirmed oral vore every time then each predator needs to have at least that so players aren't given something they don't want to see. Early on in development, it was easier to do a lower quality, but higher scene count, but now the amount of time involved in getting 1 good vore scene is already a lot, so there isn't time to add extra vore scenes.
4. Still working on it. Centaur is next, but she has proven to require more work than I expected. Last estimate I gave was by the end of August, but as you can see that did not come true, so I won't attempt to give any more estimates for Centaur's release. If you want to know right away, the Discord server for this game will get pinged as soon as it is ready, otherwise just stay tuned!