1. Make all the 4.0 areas all one big open "area" of sorts, similar to WoW.

2. More ways of gear progression apart from running your daily dungeons, special epic high level FATEs (think the Darkscale fate) that give tomes which can of course be limited to a certain amount per day, 24 man daily roulettes that give plenty of the current tomes, make high level 50+ roulettes give high level tomes, and so on. The idea is to give the player so many options that it doesn't feel like a chore, they can do whatever they're in the mood for and cap before the end of the week. SE can of course limit this system, so you can only partake in one of these tasks a day for the bonus tomes.

3. Entirely voice acted content, excluding side quests that only serve for leveling. This is a major undertaking, but voice acting adds so much immersion to the MSQ and boss fights in general that I think it would be a major game changer. It makes the world feel alive, least that's how I feel about it.