He even has a very cute kiss in the epilogue! The matter that he can do something else with the crown than was agreed upon, was also addressed in a recent patch, though I am unsure how this affects older save games.
And thank you for linking the interview. I watched it a while back, when it was relatively new and it made a couple of things make sense. He mentions somewhere that he wasn't coming from much of a D&D background and so his take on Gale doesn't end up being the stereotypical wizard ... but a more human approach to a wizard. Gale has some of my favourite writing and voice acting in the game (I feel I would get hunted down with pitch and fire if I used the superlative - so it is purely a safety precaution that I don't) There is an effortless confidence in it, not only when he is blatantly confident of himself but also in the more casual way when he is making a bad joke and you hear that he knows he's a bit corny but makes it anyway. And of course the less funny parts, which he gives such sincere gravitas. Most of this flourished text could easily gotten way over the top if the performance hadn't been so grounded. Sure, there is less room for spectacular rage, he doesn't even have a proper ending scene for his quest (only that thing which Mystra which is great in his origin but works less well in the companion version) but what there is, is spectacular.
