More suggestions:
Minor animations
Not talking about stuff that would make this the next animated extravaganza but small stuff to make characters more life like for lack of a better description.
Things like :
Blinking eyes, Breathing, Fluids dripping, tentacles wriggling, wagging tails, etc.
Simple 3-5 frame long animations.
Might be to much to do now but something for the 'maybe later' pile ?
Addition to furry toggle:
Edit tried version 30.0 and most of this part of the suggestion is already there - ignore the strike through parts please.
Human Main, Furry NPC's: Main character is human, All NPC's are furry
Furry Main, Human NPC's: Main character is furry, All NPC's are human
Random Mix: NPC's are randomly assigned the furry tag and applicable art, etc
Full: Both main character and NPC's are furry.
Could some additional text depending on settings - some NPC calling the MC a pet if the MC is furry and the NPC is human or inversely the same form the MC to a NPC.
Mostly a visual toggle if skipping the suggested additional speech text.
Edit:
Another two addition to the suggestion list but one I would be surprised if it has not been suggested before:
Add an effect or bonus - even if the effect is small - to all equip-able items
Examples:
If the nipple piercings don't have an effect then they could give a +1 to Ero
If the tattered green cloak item does not have an effect then it could give a +1 Agi
The effects don't need to be limited to stat buffs or positive effects ether.
Group equipment into three tiers for this to determine how powerful the effect bonus is - common (cheap) gets a minor effect, Quality (More expensive) gets a stronger effect, Special (unique / rare) gets two effects.
Equipment set bonuses
Equipping a complete set of equipment gives an additional bonus related to the set.
Example:
A waitress top, Waitress bottom, and waitress shoes worn as a set gives additional pay from working as a waitress - instead of say $10 the set bonus increases it to $12 so a small but helpful bonus.