As discussed on the mailing list starting with @madeleinerothberg's comment:

The thing about accessModeSufficient…. It’s the entries with single modes that are most useful to users, probably, because it is the users with restrictions on their perceptual modes who most need to know if they can use a particular resource. We can list out multiple sets of accessModeSufficient and there is no reason not to, but the most impactful entries will be those with single modes or the LACK of them.

Should we recommend the single values be listed and make other sets optional in the techniques document, or should we only emphasize the importance of single values?