After seeing the recent response from SE earlier that said they would be fixing the EXP/difficulty of FATEs, I decided I'm going to take a shot at some of the other EXP income sources that aren't pulling their wait... first up; Hunting Logs!
Simply put, they are not worth doing if you are looking for experience. This becomes more obvious when you get past the 1st/2nd rank, and the accumulated experience for traveling around the world to kill various mobs nets you less than half of a single level by the time you are able to successfully down all of the listed monsters.
It is then amplified much worse when you consider how easy it is post-30 to grind FATEs in Coerthas/N.Than and get insanely higher amounts of exp. (1-2 FATEs is worth more than that entire rank in the hunting log!). This is in part due to the wonderful 100% armory bonus as well.
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The hunting log was designed to familiarize the player with the various maps and give them something to do that was more interesting/rewarding than side quests. It is fulfilling neither of these roles right now, because people have no need of doing them as a result of poor rewards.
Furthermore, the new jobs don't even have a hunting log. Pretty much a big sign that the governing body has said "What are hunting logs? Who even does those?..."
We are just a few weeks into a new expansion, where one of the largest complaints is the lack of EXP from new content. Another large complaint is that new people are trying to complete old content and catch up with us storywise, but are running into EXP wastelands between MSQ between 1-50 (I know the 46-49 MSQ storyline gap is a bit taxing if you don't grind N. Than for an hour or so).
What is my proposal for a fix? Simple. Add hunting logs to the new jobs for levels 30-60. Add hunting logs for the old jobs from 50-60. Scale the EXP for the hunting logs from 1-50 in such a way that for each successful rank completed, the player will get anywhere from 2-3 levels. Scale the EXP for 50-60 in such a way that successful completion will grant 2 million experience flat.