I apologize for the wall of text, but I wanted to get everything out of the way in one go.
This is quite an excellent game, now that there are graphics settings that let me play it. Got a few thoughts for some changes/additions, although the base structure is in really good shape, especially considering the game isn't even halfway to full release(as of writing, this game is in 0.4.1 - 0.4.2Pat).
[=== Suggestions for additions:
0. Renamon skin / custom parts
1. Personality changing the idle expression, as well as reactions to growth.
2. Separate scales for "base size" scaling and "growth" scaling, allowing players to keep their character small if they want, but also allowing modifiers like potions and spells keep their full visual effect. Alternatively, just having growth modifiers increase attributes by a percentage, rather than a flat amount.
3. Maybe scales for how much a character grows in a specific area(or if they grow in that area at all), so characters can have, for example, a lot of belly and leg fat, but no arm fat, or have wide legs, but not long legs.
4. More hairstyles, such as eye-covering bangs, or hair that swoops over to one side to cover half the face.
5. Wider Tail Thickness slider, for a really poufy fox tail.
6. Tail growth, on behalf of whoever likes that? Gives more HP/AP regen?
7. Thigh wobble physics + More noticeable butt jiggle physics.
8. Clothes?
9. Armour visual toggles
10. Body self-collision. Perhaps it could be toggled, as massive sizes could make accurate self-collision break.
11. Height slider, for tall, slim characters and shortstacks alike.
[=== Suggestions for changes:
1. Having Speed and/or Height increase movement speed, and having Fat, Bust, and leg width decrease movement speed.
2. Arms look a little weird at larger fat values. Maybe the weight can be distributed a little bit more around the shoulders and elbows, to smooth out the shape?
3. The character model always looks like it's back is arched backwards, which would look fine on Sassy and Shy, but as those make the model lean even farther back, it looks slightly weird.
4. Having attributes increase/change collision hitboxes, and/or have special animations for trying to squeeze into an area too small for you.
5. Shift is run, space is jump? The ability to jump whenever is always nice, even if it doesn't do anything.
6. Higher limits for armours?
I want to state that these lists are meant as ideas, suggestions, and constructive criticism. I mean no offense towards Digitalfurbelow or anyone else involved in the creation of this game.