I don't really see the purpose of fatigue. even if it's an option. it defeats the purpose of 'rested' XP as well. what happens if you have rested XP and fatigue activates? it clashes.

and why do you want to level slower? I've been moving pretty slowly in my levels, i played for roughly 10 hours last weekends and got maybe 10 levels on my CNJ. i ran around, i quested, i killed some NMs on my pug when i ran into them. enjoy the scenery. plenty of ways to slow down level and enjoy the game without some odd mechanic that doesnt' make a whole lot of sense.

i equate this with making a gear damage toggle. why? everyone would just turn it off because 99% of people find it annoying when their crap breaks and they have to stop, repair it, and then can get back to w/e they were doing.