?... if you had ignored the companions influence amount during the original story, and say have a 3 standing, you have to do things to get them back.
if you spend say 200 credits x 50 (well, for some they might have to spend more.) of their most liked item you can easily get them to about 10 in less than 15 mins... vs spending say 1 hour plus for one of the less involved activities you need to do to get one of them back.
also, if you don't do their stories on at least one of your characters of that class then you will not get the legacy bonuses for that. thus, if you only plan on having one of each class at most ... and you haven't and you move on then your only option at that point would be to level another of that class.
examples of what the bonuses are would be:
+10 presence boost for each companion story unlocked
Stat bonuses like +1% Accuracy, +1% Max HP, +1% Crit, +1% Crit Damage, or +2% Healing Received
increases to the duration of heroic moment by 12 secs and reduces the cool down by 1 min for each companion story unlocked.
» Edited on: 2016-01-27 10:53:53