ah, I was kind of hoping for more story content rather then gameplay. some of the story elements are kind of barebones currently or railroad you to objectives.
Hopefully you get the energy to revisit this game one day.
Well, for one the red dragon that can be found in the mountains is a dead end currently. it would be nice if the player was able to live with them as a wife if the player has a high enough intelligence and chonk, and gets fattened up by the dragon the longer the player stays without escaping. if the player stays too long, they can't fit though the entrance and that becomes a new ending.
Or add a lake in the woods that the player can use as a mirror and as a place to hunt fish (+150 fullness). The mirror function would allaw the player to observe themselves which would allow player descriptions to be reasonably added, because right now there is no descriptions of the player at different weight levels outside of a few comments from NPC's and a couple endings. A fun thing would be if the player gets too chonky they start using the lake to rest, eventually getting too fat to stand outside of the water. Giving the player the choice between continuing getting chonky (to max chonk level) by eating fish, or exercising by swimming to eventually leave the lake to reach an ending.
Or maybe add a chubby/fat dragoness the player can meet in town that can be befriended. but watch out because they have an ultieror motive for being a friend, the NPC wants to fatten up the player. if the player plays right it can either be a mutual fattening, or a player fattening. if the player escapes the town without notice before getting too fat, next time they go into town the dragoness NPC is eating her sorrows away noticeably fatter.
Or meeting a very obese dragoness trader out in a desert caravan, with other dragons of various levels of obesity to be found and chatted with. but the caravan leader would allow the player to buy exotic food dishes, that can either be eaten by the player or given as a gift to other NPC's. the food gives various chonk levels to whoever eats it, with the least expensive giving the least chonk and the most expensive giving a ridiculous chonk level. this would allow new dialog with existing NPC's at different weight levels.
Building on this idea, adding new dialog of the player interactions depending on player weight levels and NPC weight levels. this would make the game more dynamic.
Personally I think the lake idea and new dialog idea would add greatly to the player experience.
(Ps. is your second game posted anywhere? I would be interested in checking it out.)
I have some more ideas for you.
A noble Dragonness you can meet in the port town, if Scayla is fat enough she mistakes the player as a fellow noble. allowing the player to hang out with the noble court, but be careful because if you stay too long you may be too fat to leave. you can deflect the offered meals onto the other members of the court, fatting them up.
Add dialog for when taking a looong nap, describing Scayla curling up/laying down in different locations depending on the location it was initiated in. with different descriptions of Scayla depending on her weight.
Add the ability to successfully steal the red dragons' amulet or be given the amulet if they make Scayla their wife. but it is cursed to passively fatten up the wearer. either keep the amulet to yourself or pass the curse onto another.
Maybe add a pack of fat boars to the forrest that can be located by chance, if the player wins the fight they can eat the entire pack for +1000 fullness. but the fight is not an easy one, if the players health/armor isn't high enough they can die.
Add a temple in the port town to the dragon goddess, who is a giant glutton. if you die you meet her, with a high enough intelligence and chonk stat the player has the chance to impress her. doing so allows the player to respawn in the temple, not impressing her gets Scayla eaten and the usual game restart.
Add minibosses to different environments that the player can either fight or run from. beating them gives the player an item of great wealth that can be sold and the option to eat the defeated enemy.
Add a food stall to the port town or village, with the option to steal some pastries. if the player is skinny enough it is a successful heist, but if the player is too fat it ends in being arrested by the guards. if arrested Scayla wakes up in jail, and has to look around for items to help her escape. However she has to be quick, for the food the jail serves is designed to fatten dragons up quickly. If Scala gets too big she won't be able to escape, and the cell has a mirror placed in it to see just how big your getting.
A successful heist introduces Scayla to the thieves "guild", but they look more like a ragtag group of boored teenagers and actual thieves. They want you to help them make it big, with a heist of the local Nobles hoard.
Most of these things are do-able in terms of coding them in, though others are not, like the Respawn Temple thing, or some time-limited things, since the engine is mostly made for linear games and not something like this. I'll try to implement the stuff from your reply that I find cool/interesting, in one way or another.