after doing my 2x hero trains every day I have a whooping 8x bravery seals. woo! and that's with departure boost. Now you may say just do 110 and so on. While that is true, if you do hero trains on many alts and have limited time, priority should always be 115s.
Also, since 115 is supposed to count as 2x normal runs, it should also provide 2x bravery seals.
rip extractor dreams
no time when I do 7 hero orna trains a day