Two interesting SRFIs were published right at the new year, but we've received no comments on them, perhaps because of the timing. If you have a chance, please send feedback or constructive criticism to the associated mailing lists. We'd love to have feedback from Scheme users and implementers before proceeding.
SRFI 148: Composable macros
SRFI 150: Hygienic ERR5RS Record Syntax (reduced)