Unless you specifically just enjoy this type of challenge…tomes and grims suck.
If you speedrun you’ll finish quickly enough to offset the bonus XP from getting them (200 bonus xp is nothing considering the time some of these groups take to waddle their way through everything - or worse, fail).
If you get to a certain point, the loot upgrades are also pointless (as in, who cares if they are green, blue, or orange… when they are capped at a powerlevel I’m already over in most slots).
For people who play this game for the combat, they are just a drag and slow everything down. The worst part is people making a big deal about the XP and loot without realizing how trivial the differences really are.
FS either needs to increase the significance of getting these items, and / or add a seperate que entirely that increases XP and Loot rewards based on time spent for people who would prefer a different type of challenge.