Everyone has their own wish list of what they want, and the problem is that one person's wishlist conflicts with another persons. For example, I want:

1. Official in-game DPS/HPS/Damage taken parser
2. Add-on Support
3. More graphically pleasing maps
4. Customized skill and trait acquisition/use
5. More 'fun' stats in armor (Paralyze protection, spell procs, mp/hp recovery/drain etc.)
6. More varied gear per ilvl tier (I'd say at least 10 options per tier, could have the same glamour but options for stats to choose from)
7. Allow more than 1 primary stat per job, similar to STR/VIT for tanks (this would be coupled with varied builds allowed with customized skills/traits)
8. Provide more specific information in the Character tab (How much does DET actually increase your damage/heals?)
9. Estimated damage numbers on our tooltips based on our current gear
10. Ability to gather while in a DoM/DoW set
11. Reasons for farming as a DoM/DoW - (mobs that drop gear, materials or etc that are actually useful)
12. Less positionals on skills, more positionals globally (i.e. This particular monster takes more damage from the back, this one takes more from the front. Mobs take more damage from the front when stunned/sleeping. etc.)
13. Better server side latency, or compute more locally - shouldn't have to wait a tick after applying Bio to use fester/bane, it's instant and should be instant.

I can't think of anything more, but I am sure I could given time. The main point is I know that many of you will disagree with this, and we can't please everyone.