Only guys I'd worry about losing are Marchan and Hall. Some organization may love Hall's power. Marchan has no power, but gets on base and is capable defensively.
Brito was someone the organization loved, but never produced actual results on the field.
Ortiz is a "first-round" equivalent internationally, and Randolph, of course, is an actual first-rounder. Guys with that pedigree don't go unprotected often, but they have not shown any real promise in the minors.
Not risking losing lots of potential MLB players I'd think.