I understand wanting to keep things simple, but it would be nice to be able to add more specific notes and to format the text. (If adding Notes to Accessions isn't feasible, enabling formatting for the existing long text fields would still be a big/welcome improvement!)
As an example, we currently use a physloc note with the label "Coordinates" to record locations for Resources because we're not taking advantage of the built in location management. These are formatted to be easy to read at a glance (and to match our old database).
Adding Notes (or at least formatting) would make it easier for both humans to parse the information and for machines to parse it for automated reporting.
We're using 2.6, but Accessions seem to be more or less the same in the 2.7 Sandbox.
(As an aside, 2.7.x isn't available in the "Affects versions" field.)