It makes "logical" sense to return the keys and values from
hash-table-keys and hash-table-values as sets and bags respectively,
since they have no order.

I wouldn't do this in an API of mine because of my usual opinions (see
SRFI-126 proposal), but maybe it would be suitable in this SRFI.

Or maybe you don't want to intermingle your APIs *that* much (keep
dependency limited to SRFI-114) or don't want to do it for some other
reasons...  The idea just occurred to me so I thought I'd throw it out.

Taylan