Bigger Characters Rhino's, Horse's, Hippo's, Bulls, Chubby characters mainly and maybe more submissive Big characters, 

I'm not 100% sure if the game already does something like this internally, but:

My idea is that the game would attempt to sub-categorize characters under certain "names" and not just the like/dislike sliders. Basically, if you make a character (any gender) with a flat or near-flat chest, the game would autotag them as "flatchested" or if you make a female character at minimum height and mass, but give her big breasts, then the game would pick "oppai loli".

this basicly allows you to mix match parts from other furrsonias in game. I.e you want a nekomusune then you can just replace the ears on it with cat ones. Want your cheractor to be a demon then just put horns on it from a ram. 

I don't see this a lot and this fetish is kind of rare but some of the community who know about cardiophilia and have it, would like to see this implemented into the game most definitely.

Macro/Micro Mini game or something

I saw there was going to be experimentation into support for VR, but that wand on the Daydream left me thinking about this game.

I think it would be cool to see a section in the character creator where you can take details from various species to create a unique penis. For example, an equine cock with a knot, a barbed canine member, a tapered shaft with a dragon's ridge plates on the underside, etc.

The password slot keeps adding in characters, and I don't know why.