fun gen can somewhat do roll, it’s worse at it than it is at creating stroke axis though and it’s pretty bad at that. A tool with a lot of potential but unfortunately not much utility at the moment. Good scripts still require a significant time investment.
I agree a lot of scripts would be much better served with multi axis integration. At this point the best you can do is get someone to script it, do it yourself, or set up your device to do random movements when a specific axis isn’t found.