I don't see the point of removing LT from the game, with or without LT most pve content is not a challenge. All removing LT would do is make le it harder for newer players to start grinding their FS since there are a lot more aggressive mobs then passive.
After a certain point, you don't even need LT. Pretty much every mob except for champ trolls I will end the fight with nearly no damage done to me.
If you want more challenge for pve, they need to add more content for that, rather than removing something that is pretty much beneficial to newer players.