It's possible yes. However making a hood requires modelling, not a simple reskin. There isn't anyone left who knows how to do it. (at least I'm pretty sure there is no one) I've tried doing it myself but I was never able to get the actual model I created into jk2.
Same goes for the shy guy mask. It can still be done unlike the hood, but it won't be a real mask, it would just be a picture slapped onto the model's face. (meaning at closer inspection it'll have a nose)
Taunts are a simple matter, just requires you to search for sound clips that you want to use.