You can make some small crests using fins, but making frills (like for a ceratopsian) with what we currently have is very difficult. It would be nice to have a frill or two to work with and some actual crests to make our own dinosaurs or exotic dragons with.

To me personally Ma'am isn't as sexy as Mistress , the male preference get's Master so why not \,._./

Can you add some monster girls to game like nekomata (Cat Girls) and others, this's totally counts as furry but not fully zoophilia which is liked by a big fan base and it will be really awesome if you at least 1 monster girl specie to your cool game.

I would be good to have the option of painting the subject's claws/nails of any color and maybe some patterns

Once you've got a couple of coolers, a full tank of Specimen takes like, 8 minutes to process, and you can't be doing research during that time. I'm also not sure how it interacts with when you're actively "experimenting" on somebody.

That 8 minute gap in gameplay is kind of a bummer, and spoils the pacing. Just some way to upgrade the processing time would be great.

It would be pretty cool if there was an online multiplayer feature where you could play online with friends.

Different sliders for tongue length, width, height.

Sometimes when the iris is light-colored, you cannot see the color or shade of it well against an outer white background of the eye. A thin iris-to-sclera border could solve it.

Military themed uniforms, decorations, things of that variety, to give the option for a military testing vibe?

Pubic hair and under arms hair