The only thing non-standard is facelets and afaik, you do not need those. There are examples in the source which do jsp with jsf, but I would choose facelets over jsp any time....
Sorry. There are no plans for JSP support for those things. It's not inconceivable that we would add support, but it's not on the roadmap.
I understand your concerns about Facelets, but you should really give it a try. I'm normally all for sticking to standards, but Facelets is so much better that it's almost impossible to not choose it.