[racket] splicing forms and for-body directives

I'm working out a group of macros that use syntax parameters to coordinate implicit arguments.
I use for/fold in one to have looping constructs that implicitly pass the arguments around.
`split-for-body` can get the directives out for me to put in front of the splicing-syntax-parameterize, but that disallows using the correct implicit arguments in a #:break or #:final directive.
What would it take to get these to work together?
-Ian