EDIT 26 April 2014:
Unfortunately, I will not be spending my time discussing the ideas and keeping this list up to date anymore. Anyone who feels like it – you’re free to continue posting here or recreate a new thread and keep it updated. Cheers!
Here’s a list of features which would’ve let me and many other players truly “experience Guild Wars 2 as never before” ©:
1. Improved targeting system: option to display and cast AoE skills at max (“green”) distance even if cursor is out of range (particularly useful for shadowstep skills);
2. option to exclude yellow mobs from closest targets;
3. option to limit closest target to a narrow cone in front of the character (say hello to white moa at Jormag);
4. option to prioritize heaviest mobs over trash;
5. separate key to target heaviest mob (not bound by default);
6. option to always cast AoE on selected target (if it is in range);
7. option to prioritise enemies over allies when clicking to select target (Lyssa surrounded by trash and players);
8. retaining target marker on reappearing targets (Lyssa, Inquest Golem Mk II, Shatterer);
9. reworking the way in which large targets with high target point are losing focus when camera is tilted towards the grown a bit.
10. Queuing of pressed skills (so that I do not have to hold a button to get a skill cast even if I have network lags).
11. Option to turn on highly-visible cursor for aiming in zergs large-scale LS events.
12. Ability to relocate more UI elements, such as target info bar, which would allow players to see visual cues on large bosses on a 16:9 screen, as well as seeing boss buffs (retaliation/protection/condition reflection) next to their skill cooldowns.
13. Ability to relocate weapon skills.
14. Right-click on utility skill brings up skill choice pop-up (easier than aiming into a small arrow while running).
15. Option to turn the red out-of-range bar into a red/gray color tint/red cross on the skill icon.
16. Option to disable tooltips on skills (for people who use mouse to click skills).
17. Option to make buff/condition icons on target to retain their position (can be mitigated by an option to align to left/right instead of center only); an option to always display empty placeholders for boons and conditions.
18. Option to split nourishments/guild banners/bloodlust buffs/consumable timers from boons/signets/attunements, with possibility to regroup and relocate buffs from different categories.
19. Option to make buff/condition icons larger.
20. Option to turn off (or permanently collapse into tiny icons) UI elements, such as Personal Story tracker (and daily/event trackers).
21. Option to adjust camera position (higher-lower).
22. More zoom and FoV (zoom angle/perspective) options.
23. Option to hard-fix camera zoom position and make solid objects semi-transparent instead of constantly zooming in (particularly useful at jumping puzzles).
24. First-person/no character view for taking screenshots and fighting large bosses.
25. Option to change “hold right key for camera” into “click right key to toggle camera usage” (I’m running with right key pressed 90% of time).
26. Option to display player names and armour always in their respective team color instead of “blue=ally/red=enemy” in PvP and WvW. I’m totally confused every time a red enemy comes from a blue base and captures a blue point – this is a consequence of transferring from a different PvP game which always persisted team colors, and I’m sure I’m not the only one with this problem. To make it worse, /team channel is of an enemy-red colour instead of current team color.
27. Slider to adjust amount/intensity of particle effects (which make events like Risen Priestess of Dwayna look like an epileptical disco).
28. Ability to pin a bag/several items from it to be always visible – especially useful for nourishments, consumables, weapons, minis.
29. Option to display bags in 2/3 columns (displaying 18 slots in one row and 2 in another makes it too high; however 20 in a row is too wide).
30. “Compact” function compacts all items in their respective bags if bags are displayed, or compacts everything if bags are merged.
31. Fractal uncommon/rare/exotic gear boxes should work with sorting gear regardless of the order in which bags are put.
32. Invisible bags should not be filled even if placed as a top bag (because it’s where the most useful stuff is stored) unless out of space.
33. Content from invisible bags should not be displayed in Mystic Forge (dear customer support, just how many precursors do you have to manually restore each week because of this “feature”?).
34. A magical bag shared by all characters (may be a gemstore item not to conflict with bank golem).
35. Allow moving items directly from Guild Bank to Bank.
36. Allow direct stacking of items which belong to the same player in Guild Bank.
(edited by Lishtenbird.2814)