Ok, four things:
One: I only found this game maybe a week ago, loving it already.
Two: I have a suggestion, but I don't know if it(or one similar) has already been made and responded to, and if so, I apologize for the inconvenience.
Three: My suggestion would have a fair bit of work involved, but not immediately. While I will mention as such in the suggestion itself, I already feel awkward enough as is suggesting something at all, I just wanted to make sure that it's clear I'm not blind to what what I'm asking for entails.
Four(the suggestion itself): Maybe, once the core of the game has been completed, you could go back through and add alternative v0re types to the existing enemies. There are two main reasons I suggest this: 1, every time I see the sewer rat enemy, there is a part of my brain that expects CV, and frankly it'd be very fun to see CV from them at some point. 2, right now, if you decide to turn off pretty much any v0re type in the settings, you just don't get to have the enemies that use it. My thinking for how this system would work is that, if an enemy has two+ v0re types that you have enabled, they use one at random, but if they have 2+ v0re types, but you don't have all of them enabled, they only choose from the ones you have allowed. While it would be HIGHLY impractical for all enemies to have all types, this would make it more likely that, regardless of settings, any given player has decent odds of coming across a given enemy. Once more, I don't think this is something you should be doing at this stage of the game, that'd be hellish, it's more an idea for once 90% of what you've got planned is already done, as a way to round off the game. Once more, if this is too much, I apologize in advance, I just know that if I don't suggest this idea, my brain is going to keep nagging me about it.
Once more, great game, and regardless of the path you take, I'm sure I'll enjoy the game as it gets made. for now though, farewell!
- Cartography