Here are a few reasons why AION is the best option for EX DAoC Veterans. Been playing on the Chinese server (with English language patch) and this game is immense. Reached Level 38 with a Gladiator and have a Level 22 Cleric. Ignore all those who say its a PVE grind. This simply is untrue.
(1) AION has a RA system like DAoC. With passive stat boni as well as powerful abilities on timers. People get a real sense that their characters grow stronger through RvR. You can save up Abyss Points gained from RvR kills for uber gear.
(2) There is no PvE grind for gear and AION has DAoC-style crafting, and spellcrafting. You can craft or gain RVR reward gear for the "ultimate" template based on a mix of crafted and RVR earned gear.In AION there is real crafting. Armorcrafting, weaponcrafting with secondary skills like woodcrafting that allows you to reinforce keep doors and repair them.
(3) AION has 'The Rift' is in-game PVP dungeon that is very similar to Darkness Falls.
(4) The layout and size of the "inner keeps" is very similar to the keeps in DAoC RvR zones and BGs. As with DAoC, AION has destructable walls and seige weapons
(5) AION has 6x6 combat - this rules. It is possible for strong but differentially balanced 6 man groups (e.g tank groups or mage groups) to take out 16 man and even 24 man groups.
(6) RvR End game is immense, offering all kind of merit, status and rewards for individuals, clans and realms.
(7) CC is smart but not overwhelming and can be dealt with by good healers and other classes.
(8) Like DAoC, AION is extremely elitist.
(9) Unlike DAoC you can RvR in-flight mode, liked a Winged Angel or a Demon