the fastest way to level without events is to level in other maps with an xp enable elixir instead of running molten mountain. if you have plat that you're willing to spend, there is literally no point in running molten mountain to level because it takes significantly longer especially considering you need to find a full game whereas you can use xp enable elixir to level solo easily.

new sets are also not worth crafting. the stats are only very slightly better than non crafted myth gear and the procs make no difference in pve (and dont work in pvp). the health procs are useless because you already have enough health to survive, the helm proc is useless because you don't need more than 4x speed and the farming map is tiny anyway + it doesnt give much speed, and the dmg proc for 2h weapons is almost useless when volta dagger is still the best weapon in the game for dps and killing bosses fast. so why play the molten mountain campaign at all? vanity drop? i havent seen a single vanity armor drop in over a month of new cap and if there are any in game there are less than a handful.

playing the new campaign seems like an incredible waste of time. so much grinding for so little reward.