I know that no game is perfect and have always room to improve but 3 things will get worst in 5.x if they not fix.
1 -> I think most of us have encountered the same problem over and over again with ppl have no idea about mechanics at all. I’m not talking about new mech or mistakes in the level that they supposed to learn those things. But levels 70 (max levels) that still have no idea about stack mechanics for an example or role basics.
I’m not against a skip potion or HoH/PoD, since this is probably the most eficiente way to get level 70, behind MSQ. But I think they should improve the Hall of Novice (do something that really help) and make it a must if you buy the jump potion for a role for the first time if you don’t have level 70 on then. Spam HoH and PoD is just good for leveling up, almost don’t help in game.
2-> Add min ilevel for all the dungeons. Who haven’t have a paper tank, no dmg dps or can’t heal healer because his/her ilevel is way to low. And I can’t blame them since is a game problem not player.
3-> Fix the Mentor status, make something that gives proud for those using it and make it account wide. Also do something about Ex trials specially because now most of the ppl get the clear using unsync so they sometimes have no idea about the fight at all.