Ok not all of these may be great suggestions bust some of them have been suggested by the community and more attention to these wouldnt hurt.
1. A graphical update/optimization: Basically not a change of art style since its one of the strong points the game has. Its more about an update to polish and revisit textures in game etc. Also changes to option like post processing since in many cases higher setting can make the game look worse etc. (Most games do these with new expnsions)
2. A wvw revamp. This is suggested overall alot so i wont go into it much. A suggestion he makes is have more pve content to secure resources which you use for various things. The game is called gw2 u’d expect massive pvp would be a really big part of it and it isn’t
3. More world bosses.(having uniue rewards etc per world boss)
4. Less of a wallet clutter (basically too many currencies)
5. The ability to use water weapons on land (spear for example). Especially since the game moves away from underwater combat.
6. Hard mode for dungeons (basically the dungeons for lvling are good even hard when you do them on base lvl but when geared and max lvl it becomes really easy). Asuggestion was to have all the paths connected as hard mode with ofc good rewards depending on the length.
7. Pvp having the circles like the ones that exist in pve for various attack(i suppose he means the orange circles).
8. A craftng rework. Crafting is a big part of the game and the game supports you getting into it from early on since it also helps you lvl up. After that it becomes slow and rather boring and you cant play the game as a crafter and make a living from it(example was being able to sell asc items on the tp). Also the addition of more life skills fishing (proper skinning) etc.
9. Season events as replayble content through the mists. (i think he is talking about season 1)
10.The last suggestion was about world event (i dont really get what he suggest so u should check that for yourself). time ~5:05
The order of these doesnt hold any value so i didn’t list them with the same order the creator did.