The game mechanics in DDO are really good, but replaying the early instances etc. makes me realise how dull and bland the environment textures look. Sure, it's a sewer/dungeon etc, but I'm sure Turbine has access to talented artists that should be able to make these early instances much more visually appealing. Would it take that much effort to redo something as simple as the wall or floor textures etc. ? Maybe even playing about with the light sources would help.
Surely going back and improving some of the visuals, like the environment textures in the early instances, would create a better first impression of the game and would help hook in new players who are yet undecided about the game, as first impressions make a big difference and you spend so much time in these sewers and dungeons.