Some ideas! (saw some in other comments)
1-more bugs obv. Spiders maybe? Olso some special bugs effects like a mosquito gender bending bite
2-plant enemys (easy way to add tentacles) giant flowers and gas stuff will be great
3-upper body scenes like that one leach. All other scenes are lower body
4-ABSOLUTELY more fetish stuff like being mummy bondaged by spider or tickled by annoying mosquitos on armpits
5-nests. Every enemy can have a nest where they appear alot and have 100% chance to game over scene or summon a boss enemy
6-more sea stuff as she can pass out or something and fishs use her as aquarium