So far with the occasional FATE and doing just leveling roulette and having ran the new dungeons maybe..twice? I'm level 65 and growing (haven't done the 65 one yet! That's tonight!). I left all those side quests behind for the most part

Maybe it changes later but going into 66..I've skipped the side quests that aren't blue for air currents.

If you play around you'll find yourself doing some of the challenge log unexpectedly and those give nice boosts. That's if you're not rushing. I think I maybe did a chunk of them at the beginning 60 / 61? But that didn't last long.