1. Filtering the TP for Wearable Armour
Seriously, why doesn't this exist?
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I see the TP as like a spreadsheet and, surely, amongst the metadata for each wearable item there must be an "armour class" column - light, medium, heavy? Right? Just give us the option to select one of the three by which to filter.
Or better yet just give us a "Filter for items I can equip" button. That way all we would need to do is set a lower level limit and all of the wearable items for our level would be shown - jackpot!
2. Filtering the TP for Back Items
Whilst we're at it - why can't we search for back items? They're a wearable piece of gear, yet the TP offers no support for searching for them. Instead you have to be a master in the dark arts to find the special combination of search terms to find them. Muchos confuso.
3. First person mode.
This is the first of a few "we had it in GW1" features. Completely different game, I know, I know - but every other MMO seems to have a first person mode, so Guild Wars 2 seems to fall just that little bit short. You zoom and zoom and zoom until finally - BUMP - you hit the back of your head and can go no further.
The screenshot takers amongst us are at a loss.
"Nice screenshot - it would be a shame if someone were to, I dunno... get their fucking head in the way"
And don't tell me to buy a tonic to change into an air elemental and zoom right in - its not the same!
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Or capes in general. Maybe the server would explode if it had to render 300 fluttering mantles during a WvW zerg, but considering the avalanche of back-gear we've recieved over the past couple of years its incredible we haven't yet recieved the item no self-respecting guild warrior would leave home without - the humble cape.
5. Hiding the Quest Log
I did a survey last year for my ergonomics class. I surveyed 400 GW2 players to find out their opinions on the UI. The absolute top requested feature was the ability to customise it further, and out of the many suggested customisations - the ability to hide the quest log reminder in the top right was absolute premium.
For those altaholics amongst us, sometimes we don't want to be reminded that it's time for us to take back claw island, or to assist a Queensdale resident, or Dwayna forbid - tackle Zhaitan. We'd like to put that little bit of the game out of our minds for now and focus on other things, but noooooOOooo we have to be constantly reminded with flashing and obnoxious green stars everywhere we go.
At the community meet-up I went to a while back Colin Johansson said that this was to ensure that newbies knew where they were going. Well, thats all very well and good Colin - but give us more experienced players the option to turn it off, please? Put it on by default, sure, but just the option would be nice.
Honourable mentions for glaringly obvious features now implemented after far too long: minis not depositing with materials, wardrobe for our gear skins, TP text size actually readable, last log-in date for guilds... etc etc