multiple captcha alone wont confuse it, it just passes any captcha it finds back to xevil, and ones it can't solve back to the user/3rd party
But as honey pots, it depends how you hide them, what you are talking about is effectively a honey pot, so as long as you don't do all the red flags that the core does, you can still use honepots, but hidden field types are now targeted (so weaker than before). There are other types of honeypots that are not hidden fields
... all those things you mentioned are done by fbhp, but we can not rely on hidden fields alone now, so must use other types of honeypots (non hidden fields) that have not been targeted.