“Brevity has become an increasingly compelling selling point in today’s legit landscape, but a number of this season’s incoming productions — following the Tony-winning revival of play trilogy ‘The Norman Conquests’ — are bucking the trend and hoping auds still have an appetite for the epic.” Among the outsize events on the horizon in New York: “‘The Orphans’ Home Cycle,’ nine Horton Foote plays condensed into a three-part marathon running, yes, nine hours.”