Fantastic guide, just two points.
1) it's not completely confirmed that the Hoth/Belsavis bosses only drop those, it's just what we've seen so maybe change the wording to known drops include End or Crit.
2) Leth outpost is, to the best of my knowledge, an Imperial only outpost so possibly try and find the Republics closest.
Still I've already bookmarked to send to guildies when they ask!