Customizable Hands

Is anyone else bugged by the fact that the three-fingered hands have no thumbs?

The current setup with the different hands and feet works pretty well as it currently is... A handful of different options to swap between for characters with different numbers of digits, and few enough that it doesn't become cumbersome to navigate them all. Unfortunately, setting it up like this limits the variety of hands and feet characters can have.

The current options would remain as defaults, of course, but with an advanced customization menu if you want a little more control over the final result.

There would be a number of different sliders; one to determine the number of digits (2 and 8 seem like reasonable extremes), another to determine the bulkiness of the hands/feets, and others to do something else (I haven't thought of anything else).

There would also be a few toggles; one to add webbing between the digits, another to add a thumb (maybe even a second thumb toggle for the other end of the hand, so you can have two thumbs, kinda like Halo's Elites), yet another to split the hand down the middle so it looks like a head crab (a real thing that happens sometimes, I swear!), so on, so forth.

With this setup, I'd be able to have three-fingered hands that have thumbs on them! No need to compromise, my three-fingered dragon friends!
Maybe you could add even more stuff, to make for even more bizarre hand configurations? The possibilities are endless!