When I enter in a constituent and spouse, I can put in all the constituent information and an ID number is assigned. The spouse name is there, with Title1 and Suffix1. The spouse is not given an ID number, not can I put in the Spouse Addressee and Salutation fields.
You're right, it doesn't look like those fields are are available in constituent batch. The heading of the suggestion could be a little more clear -- maybe "add spouse addressee and salutation to fields available in constituent batch" -- to get more votes.