We recently surveyed all our accepted journals (currently there are 68). A summary of the results follows.
84% have a proper archival/preservation solution in place
87% assign DOIs to their papers
86% are in DOAJ
54% have a formal legal organization that owns the journal
29% publish basic statistics annually
29% publish XML and 20% HTML
We will work to increase most of these to 100% within a year. This kind of continuous improvement is not something we often see with commercially owned journals. In fact, many of those seem to deteriorate in quality while making large profits for the parent company.