Well if you're taking suggestions, I have far too many to pester you with.
Rear pose+ Variants
The ability to wear clothes and pull them aside to still show the goods
Anal plugs of various sizes and functions(vibrating, expanding, e-stim, ring plug(hollow), see-through, soft/squishy, prostate stim, etc.
An arousal system that changes ball size and can make the cage leaky
Hypno/porn being sent by fans/corporations/hackers, in order to affect the aforementioned arousal system
A planning mode that assembles a short collage of images together to from "story"-like content.
Named fans Sending nudes if you take the flirty route, and sending hypno / sph if you take the rude route.
And for the grand finale / setup for a "stage 2"(like spore), An E-lock cage that extends its locked duration depending on how much money your fans pay.