1. Seriously, this thing has to go, after 6-7k players online its basically impossible to see what's happening around you, sometimes is smaller then the range of hunters, you cant understand who the heck is killing you. You cant see who is ganking you, you cant see if its safe to attack someone cause its possible that behind your target there are 10 more who are roflstomping you in 2 secs. Its beyond stupid and its not even remotely close of blizzlike. I can deal with 100 ms latency instead of the 40 ms that I have now, but not with this. Noway in hell. I need to see, simply as that. Its a videogame, not "guess what I have behind me", dammit.
2. The spawning times of herbs/mobs/etc is horrible. When you have 8k players online, you just can't wait 30 mins for Tethis to spawn, only to see another 20 players wanting the same thing. I saw players who waited 2-3 hours for ONE quest to be done, its not normal. Not even talking about hours of wandering on maps and no node/herb on the map.
More players > faster spawn rates, simply as that.
Don't call it a rant, I am quite pleased by the devs, but still some things can ruin the whole experience.