These are my personal hopes for RoK Xpack.
1.Epics, based on the old EQ1 epics, maybe even some reference to the old Quests in the new quests. Singing Short Sword for my Troub would be awesome, Fiery Defender for a Paladin, Staff of the Four for a Wiz etc. Make them long like the EQ1 quests, requiring many solo, group and raid steps. They've been using this as a selling point for ROK for a few weeks now. We won't get Heritage quests at all, but rather epic quests for each class. It starts out solo and group, gives a legendary reward, then requires raiding to get the true fabled epic.
2.Raid instances, I hear we are getting Veeshans Peak! i cant wait, i was fortunate enough to experience it the first time round with my EQ1 guild, many people missed this zone, i hope they can implement it like the original, with a host of Dragons! But please leave Hoshkar out hehe. Already confirmed
I'd also like to see Sebilis and Karnors Castle as Raid Zones. Also City of Mist would make an awesome raid zone! Since Venril Sathir was shown in the video, and is in Sebilis, there's a good possibility of that. Karnor's castle, I doubt that'd be a raid zone.
3.Dungeons / Instances, i really hope we get Chardok as a dungeon, this was without doubt one of the greatest dungeons in the original Kunark, along with Sebilis, also please add Howling Stones, one of the best dungeons ive ever played in. Chardok is in, though we don't know what it is just yet.
4.Heritage Quests, Personally i'd like to see HQ's for the following, Sarnak Battleshield, Stave of shielding, Hierophants Cloak, Necklace of Superiority. Many more also spring to mind, Hangmans Noose, silken catfur girdle, Sword of Skyfire etc etc. As I mentioned above, we're not getting any heritage quests this expansion.
5. World Contested Mobs, Severilious and Faydedar spring to mind 
im sure ive probably spelt both those wrong tho lol. They're doing away with contested mobs.
I for one am really looking forward to this Xpack!