Ok, so we need to tie up some loose ends, clearly. While I can't help you with the questions you asked, I'll try asking some that YOU might be able to springboard off. Meanwhile, I'll go watch all those Limsa cutscenes and see if anything occurs to me. It really is the most confusing of the city stories, which means it must have been a real challenge to localise. /props to Ferne

Q1: Who exactly is Blackburn? Eyes and ears of the Path, yes, but what is his connection to historical events? The best I can think of is a lighthouse keeper at the God's Grip.

Q2: What does Blackburn tell you at the Waking Sands at the start of Fade to White? Both Minfilia and Khrimm (the Hermit) drop hints for you, meaning it would be odd if Blackburn didn't say something significant.

Q3: Does anything in history change in that final sequence? If Y'shtola and/or Trevanchet have joined you for the ride, do they do anything that shouldn't have happened if they weren't there?