Still almost impossible to get into high-end dungeons unless you have a newbie friendly guild. No experience = no chance of getting into end-game dungeons because elitism. This doesn't apply to low level dungeons because auto-match feature. DPS class still takes forever to queue.
Much easier to solo BAMs due to addition of Avatar weapons. You receive those weapons every couple of levels until 65 and are OP as hell. My slayer could kill a BAM in less than 20 seconds at level 50 if i recalled correctly. These Avatar significantly speeds up leveling up tremendously.
PVE/Party/Quest still the same. Best level-up method is spam dungeons with auto-match feature or grind on BAMs with 2x exp. 95% of quests consists of kill xx amount of y monsters.