I have done main questline the most. Not sure about guildhests but I've done pretty much everything else. Dungeons are probably the ones that I've had most fun with, especially the ones that have lots of little gimmicks in them. grand company guests and guildleves on the other hand are just meaningless grinding. Fates were fun at first, but now I usually won't even bother with them, there is just way too much of them and too frequently.

I'm going go for Black mage job, I started as thaumaturgist so I guess i'd have switch to archer next.