Realistic character animations for various ancient/medieval/early-gunpowder melee and ranged weapons, if possible in smaller separated packages rather than huge expensive ones. And also for horse mounted fight - I really miss them.
I think a lot of RPG/slasher/strategy games could be benefited, if not only movement, sword, and gun animations would be available, but spear, javelin, sling, battle-axe, mace, knife, bow, crossbow, musket, halberd, pike, with and without shield, 1-handed and 2-handed versions where needed etc.