Gale doesn't have anything a Human Tav Wizard doesn't get until Act 3.
While it might not be much compared to what you describe for Shart, you only get the option to cleanse/absorb the body of one of the Thorm siblings with Origin-Gale. Also you generally don't get reminded that Mystra would not approve of Tadpole absorbtion.
Now, that said, Gale gets the *best* Act 3 and the coolest finale out of everyone
Do you mean blowing up with the coolest finale? I think that is a rather depressing finale, just as the whole God-affair is. What makes Act 3 special for you?
