I would personally LOOOOOOOOVE to see both these added in more of a small batch function.
Old World Delves
Bael'dun Digsite; Join Brann (A) or Baine(H) to discover the mysterious history history of the area. See what happened between the dwarves and the shamanistic spirits, and the battle between the Horde and Alliance.
Magistrates Temple: seen in Rexxars trials in WCIII, discover the secrets of the ancient magi and the more recent, from Tabetha and Magweyn to Aethas Sunreaver and Ari.
Plunder Isle: Plunderstorm to Plunder Isle; fight off Pirates and get the treasure. Join Flynn and fight a time traveling pirate dragon!
WoD Farahlon
Old World Follower Dungeons
While they would never added all the dungeons and convert them to follower, they could add a few favorites.
WotLK - Azol'nerub or Ankahet - Join Bolvar (A) or Saurfang (H) in their quest to bring the might of the Alliance or Horde to front door of the Scourge and the Lich King, Arthas Menethil himself.
TBC - MGT - Join Liadrin for Horde or Alleria for Alliance and take down Legion and their newest Commander, the traitor Prince Kael'thas Sunstrider.
Legion - Cathedral of the Night - Join with Anduin and attempt to stop Mespiroth from gaining the Aegis of Aggramar.[/FONT]