I will sum up some of the ideas and bring some of mine also:
Will appeal to the F2p and Premium mass, but not to Vips (Both are nice ways to introduce players to new zones, areas, features):
1 - Hard / Elite Opening tokens;
2 - Guest Passes;
3 - Races (Warforge; Orc; Half-Elf; Drow);
4 - Classes (Monk, FvS);
Will appeal to all:
1 - +1 Tomes and + 2 Tomes;
2 - Greater and Lesser Heart of Wood (already seen the lesser on the lotery);
3 - Armor kits;
4 - Bags (all of them Large and Huge size);
5 - Shroud Ingredients (1 of the Large type; 2 of the Medium; 3 of the Small);
6 - Guild amenities (Gold seal and cosmetic);
7 - Craftable Items (Trinkets, Metalline, Adamantine, etc weapons and armor; jewelry and so on);
8 - Crafting Ingredients (like stacks of 100 or the area specific items);
9 - Desert Tokens;
10 - Bank Slots;