Why do people keep posting that they "wish they improve this thing or the other", when the link in the original post downright states that they are improving all/ most of that?
Dungeon's and pve's bosses, reward systems, events, guilds, casual and competitive pvp and world versus world are all supposed to get big improvements this year (or so they say).
For pvp, we're getting custom servers, observer mode, matchmaking, leaderboards and revamped rewards.
For pve, bosses are being completely revamped, new instanced content is being created for guild group play, guilds will be able to create(?) some kind of events in the world where everyone can join, and achievements will now also be a source of loot and a mechanism to make sure people are willing to explore every corner in the world and do every single thing. There'll be more dynamic events formore diversity, and they'll probably be better scaled.