Death Penalty (instead of broken armour; I had many great moments when you finally finish a mission with -60)
Heroes to equip and to take with you when you have limited time to do a event/dungeon/mission
Skills and Dual Classes -> GW1's system of unlimited builds was really great - so much fun exploring new skill synergies (and I even liked the hunt for elite skills)
my mummy ritualist!
GW1 armour skins
Guild Halls
Group size: 8
Great epic storylines
Armour/Weapon stats were fixed at level cap
Cantha!!!
I guess I would have been more content with another expansion to GW1. In overall, I doubt I will play GW2 as long as I have played GW1 (since Factions), at the moment GW2 is just a (better) mix of WoW/DAoC/WAR/SWTOR.