I've played many other MMOs before this one: WOW, Aion, Everquest 1&2, Vanguard, Eve Online,etc. Having played AD&D from the time I could read I love seeing such a faithful adaptation of the game to an mmo. The dungeon masters, story-driven quests, the dynamic combat, the puzzles, the overall complexity and flexibility of the game make this my favorite mmo by far.
My suggestion is to keep it complex and fun; the last thing I think any ddo fan wants to see is another water-down game like WOW that attracts obnoxious 12 years and adults that act like 12 year olds, which brings me to the last thing (but not least) that makes this game great: the community! Of course there are exceptions, but by far this is one of the most mature communities I've had the joy of playing with.
Thanks again for the great game!