So this looks looks pretty cool, my computer sucks ass so unfortunately I can't play it but I have watched a good amount of videos about it if that means anything lel.
Anyways I have some ideas that think would be cool to see in this mod, I'll separated into parts so it would be easer to read.
--configed vore actions--
So I think a good replacement for the vore tool would be to add a button to swallow (and burp, I'll get to that later) so one could swallow a enemy in mid combat with having to hold a item.
This would also mean that the config menu would have to be moved to button as well. (with a new setting to change the buttons for all the actions)
--new belly mechanics--
The first idea I have is to have a different special effects for a example when swallowing a Ghast you'll get a small floating buff and when you burp there's a chance that you'll spit up a fireball. (same idea for maybe an enderman but with a ender pearl that when it hits a mod, they'll teleport into your gut probability of you spitting out one is rare)
Mobs having different levels of being able to escape from your belly, so if you swallow a bunny because of their fast nature they have a high chance of escaping but as for hostile mobs there are more nuanced ways of escaping.
Here's two example
Creeper: blows up in her belly dealing a bunch of damage and leaving your belly empty (and with a kind of upset belly status effect)
Iron golem: every now and then you'll be launched up a tiny bit, again dealing a bunch of damage
There are a good amount of interesting ways of mods escaping out of your belly prison.
Here's some little other ideas, I don't know if these's are in mod already but felt like I should still mention them.
1. spitting up mob pacific item like iron from a iron golem and stuff. (the rotten flesh idea is pretty clever tho)
2. Having a "stuffed status effect" a mix of dizziness, fatigue and slowness. (also having moans when stuffed would be nice to see)
3. Weight gain option, it would a neat touch to gain weight after sleeping/just digesting pray shown by getting wider, bigger belly, fully cheeks and visible tits/moobs. (also speed being lowed)
--More vore based mobs--
Here's some of my mob ideas.
Female Warden (once update is out): a curvy female version of Warden. They have a huge bellies with toothy mouth, big fat breasts that sat on their belly and a huge Darkmatter like eye on their face.
They're not blind like their male counterparts although their hearing and eyesight is kinda bad, you have to run into them or get really close to them for them to detect you.
Once they see you tho they will chase you down and if they eat it'll be super difficult to escape from their belly.
If they'll damaged a good amount then they'll fall to the ground and let out a loud scream, they'll be disabled for a tiny bit but the scream will alert any nearby Wardens.
General Piglin: they'll replace Piglin Brute, their behavior is almost the same as the Brute but if your heath is low enough they'll swallow you.
The best way to beat them is feed them any golden food, by doing this their belly will bloat and they'll be left immobile for sometime once they'll big enough.
Remade wizard: not too different from the regular other then them having a more attractive appearance but the biggest difference is that they'll never use a potion of harming.
The idea is that they'll either use a potion of slowness, weakness or poison and then she'll got in for the kill by swallowing you.
It'll be moderately hard to escape their belly.