Dynamic weather/nature/natural disasters. (snow eles spawning in a blizard, earth eles spawning from earthquakes - actual eq's opening the ground etc etc) I'm sure I remember seeing a dragon or wyrm on a mountain guarding piles of gold and silver on the origional game box. I want that too, and volcanoes. Floods, swamp monsters.
Pirates.
All opposing monster groups actually fighting each other, combined with multiple group random unannounced town invasions. So you would get demons and elementals suddenly invade somewhere until their pushed out - one wave - the fighting of two groups would allow players to get in to the thick of it a bit more rather than fighting from the outskirts due to being swamped with lesser spawn. They wouldn't always be opposing groups invade but it would make sense that occasionally two groups would clash in a town.
Glacial staffs made spell channel and given their old power words/abilities back.
Oh and some (almost any would do - almost any means not a bard only pet, pet related accessory) bard content.