Nothing wrong with suggesting ideas, though as Myakot says, even good ideas may take a while to be implemented. Especially if they are difficult to implement.
Another thing I'd like to say is that I don't think Charisma is a 1 or 10 stat. Anybody who plan to ever be in a squad has something to gain from putting one or two points in Charisma. The boosts you get scale directly based on how much charisma you have, it is not only the leader that counts.
As for the idea itself, I'm not necessarily against the thought of having some kind of pets, but it's pretty low priority at the moment. Tons of things I'd rather implement first. After most bugs are taken care of that is.
But yeah, don't worry about making suggestions, it's welcome.