Thank you for the feedback, I'm glad you're enjoying the game!! As for your suggestions:
- some kind of alien spider girl is definitely doable, though when it comes to alternate forms of vore like unbirth, I'm trying to first keep the game focused on oral consumption first (with a couple special exceptions for enemies that can consume to their stomach in non standard ways, like via tail maw or via absorption for things like slime creatures). After any pred enemies have ways to eat the player normally, I'll consider alternate forms of vore as extra animation sets that can be toggled on/off.
- Weight gain for the player character is planned! It'll just be a long ways off since it'll require a ton of extra animations - due to Mia having multiple belly sizes, there is something like 4,000 frames of animation that she currently uses, so adding even just 2 new weight levels would be an additional 8,000 frames that need to be drawn. It's probably the single most requested feature though so it'll definitely be in at some point sooner or later!
- I do like the idea of a hipcheck ability - there's already an ability similar to a hipcheck in game (wrecking ball) but honestly it could do with a visual update since it doesn't even use any unique animations, so I could see about updating it or otherwise just adding a new ability, since I still want to add many many more
- Different ammo types are also planned! Currently the rough plan is to include fire, ice, kinetic, and electric, with a couple different firing modes for each. There will also be an inventory for using some consumables, like throwable smoke bombs and stun grenades and whatnot.
- There is a plan for alien enemies to regularly swallow station crew (and eventually vise versa as well) if they come across each other - there are LOTS of animations needed for this as well though, since not only will it require a full set of belly animations, but the enemy will then need to be able to do their normal full move set as well if the player engages them while they're full, so it'll be a bit before this can happen
- There will be lots of extra hazards and features I'm planning on adding! I've got a small list already prepared and concepts for several more. Having the missiles and laser barriers being the only things in the levels to interact with would be a bit dull.
Thanks again for your suggestions, I hope you keep enjoying the game :)