Thancred is more active character in the story after 2.1. I think instead of Thancred, Lahabrea should have taken over the body of the Scion that you meet in the level 1-15 zone. If you did not start in Ul'Dah (did not play 1.0) then you will only meet Thancred for a short time during the Ifrit questline. I am not saying Thancred is forgettable, but SE should have made the vessal of Lahabrea be more connected to the warrior of light during the 2.0 storyline. When Lahabrea revealed himself as Thancred, instead of going "OOOH SHIT, OMFG Thancred MY BABY", my reaction was "Oh so there you were"

Now I like Thancred that is, because he had more screentime from 2.1 till 2.55.