I've finished the main story and I've grinded some Lynel guts to upgrade the soldier armor (I currently have 64 armor points total when wearing the set.) I've also defeated one King Gleeok, and I've completed two of the large maze structures.

I'm not really sure what I should do next. The obvious answer is to do side quests, but so far I haven't really enjoyed them. (I particularly don't like the ones that involve gathering info at stables.) What should I do next? What's the most enjoyable side content to do? Maybe I should track down all of the Sages Wills, or defeat all of the Gleeoks?